diff --git a/config/config.go b/config/config.go
index 828e19b..5d3a9a9 100644
--- a/config/config.go
+++ b/config/config.go
@@ -243,7 +243,7 @@ type SectionGRPC struct {
 }
 
 // LoadConf load config from file and read in environment variables that match
-func LoadConf(confPath string) (ConfYaml, error) {
+func LoadConf(confPath ...string) (ConfYaml, error) {
 	var conf ConfYaml
 
 	viper.SetConfigType("yaml")
@@ -251,8 +251,8 @@ func LoadConf(confPath string) (ConfYaml, error) {
 	viper.SetEnvPrefix("gorush") // will be uppercased automatically
 	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
 
-	if confPath != "" {
-		content, err := ioutil.ReadFile(confPath)
+	if len(confPath) > 0 && confPath[0] != "" {
+		content, err := ioutil.ReadFile(confPath[0])
 		if err != nil {
 			return conf, err
 		}
diff --git a/config/config_test.go b/config/config_test.go
index ef7e5d3..5405040 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -25,7 +25,7 @@ type ConfigTestSuite struct {
 
 func (suite *ConfigTestSuite) SetupTest() {
 	var err error
-	suite.ConfGorushDefault, err = LoadConf("")
+	suite.ConfGorushDefault, err = LoadConf()
 	if err != nil {
 		panic("failed to load default config.yml")
 	}
@@ -215,6 +215,6 @@ func TestLoadConfigFromEnv(t *testing.T) {
 
 func TestLoadWrongDefaultYAMLConfig(t *testing.T) {
 	defaultConf = []byte(`a`)
-	_, err := LoadConf("")
+	_, err := LoadConf()
 	assert.Error(t, err)
 }
diff --git a/gorush/const.go b/gorush/const.go
deleted file mode 100644
index d803d15..0000000
--- a/gorush/const.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package gorush
-
-// Stat variable for redis
-const (
-	TotalCountKey     = "gorush-total-count"
-	IosSuccessKey     = "gorush-ios-success-count"
-	IosErrorKey       = "gorush-ios-error-count"
-	AndroidSuccessKey = "gorush-android-success-count"
-	AndroidErrorKey   = "gorush-android-error-count"
-	HuaweiSuccessKey  = "gorush-huawei-success-count"
-	HuaweiErrorKey    = "gorush-huawei-error-count"
-)
diff --git a/gorush/feedback_test.go b/gorush/feedback_test.go
index 2ef91ec..dbf460d 100644
--- a/gorush/feedback_test.go
+++ b/gorush/feedback_test.go
@@ -13,7 +13,7 @@ import (
 )
 
 func TestEmptyFeedbackURL(t *testing.T) {
-	// PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 	logEntry := logx.LogPushEntry{
 		ID:       "",
 		Type:     "",
@@ -23,13 +23,13 @@ func TestEmptyFeedbackURL(t *testing.T) {
 		Error:    "",
 	}
 
-	err := DispatchFeedback(logEntry, PushConf.Core.FeedbackURL, PushConf.Core.FeedbackTimeout)
+	err := DispatchFeedback(logEntry, cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 	assert.NotNil(t, err)
 }
 
 func TestHTTPErrorInFeedbackCall(t *testing.T) {
-	config, _ := config.LoadConf("")
-	config.Core.FeedbackURL = "http://test.example.com/api/"
+	cfg, _ := config.LoadConf()
+	cfg.Core.FeedbackURL = "http://test.example.com/api/"
 	logEntry := logx.LogPushEntry{
 		ID:       "",
 		Type:     "",
@@ -39,7 +39,7 @@ func TestHTTPErrorInFeedbackCall(t *testing.T) {
 		Error:    "",
 	}
 
-	err := DispatchFeedback(logEntry, config.Core.FeedbackURL, config.Core.FeedbackTimeout)
+	err := DispatchFeedback(logEntry, cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 	assert.NotNil(t, err)
 }
 
@@ -59,8 +59,8 @@ func TestSuccessfulFeedbackCall(t *testing.T) {
 	)
 	defer httpMock.Close()
 
-	config, _ := config.LoadConf("")
-	config.Core.FeedbackURL = httpMock.URL
+	cfg, _ := config.LoadConf()
+	cfg.Core.FeedbackURL = httpMock.URL
 	logEntry := logx.LogPushEntry{
 		ID:       "",
 		Type:     "",
@@ -70,6 +70,6 @@ func TestSuccessfulFeedbackCall(t *testing.T) {
 		Error:    "",
 	}
 
-	err := DispatchFeedback(logEntry, config.Core.FeedbackURL, config.Core.FeedbackTimeout)
+	err := DispatchFeedback(logEntry, cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 	assert.Nil(t, err)
 }
diff --git a/gorush/global.go b/gorush/global.go
index 1f51c43..cdee529 100644
--- a/gorush/global.go
+++ b/gorush/global.go
@@ -1,18 +1,12 @@
 package gorush
 
 import (
-	"github.com/appleboy/gorush/config"
-
 	"github.com/appleboy/go-fcm"
 	"github.com/msalihkarakasli/go-hms-push/push/core"
 	"github.com/sideshow/apns2"
 )
 
 var (
-	// PushConf is gorush config
-	PushConf config.ConfYaml
-	// QueueNotification is chan type
-	QueueNotification chan PushNotification
 	// ApnsClient is apns client
 	ApnsClient *apns2.Client
 	// FCMClient is apns client
diff --git a/gorush/main_test.go b/gorush/main_test.go
index 81e9cd0..5832fe7 100644
--- a/gorush/main_test.go
+++ b/gorush/main_test.go
@@ -1,9 +1,7 @@
 package gorush
 
 import (
-	"context"
 	"log"
-	"sync"
 	"testing"
 
 	"github.com/appleboy/gorush/config"
@@ -12,33 +10,19 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 	if err := logx.InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	); err != nil {
 		log.Fatal(err)
 	}
 
-	if err := status.InitAppStatus(PushConf); err != nil {
+	if err := status.InitAppStatus(cfg); err != nil {
 		log.Fatal(err)
 	}
 
-	ctx, cancel := context.WithCancel(context.Background())
-	wg := &sync.WaitGroup{}
-	wg.Add(int(PushConf.Core.WorkerNum))
-	InitWorkers(ctx, wg, PushConf.Core.WorkerNum, PushConf.Core.QueueNum)
-
-	if err := status.InitAppStatus(PushConf); err != nil {
-		log.Fatal(err)
-	}
-
-	defer func() {
-		close(QueueNotification)
-		cancel()
-	}()
-
 	m.Run()
 }
diff --git a/gorush/notification.go b/gorush/notification.go
index 07fb5f8..8d6192d 100644
--- a/gorush/notification.go
+++ b/gorush/notification.go
@@ -9,6 +9,7 @@ import (
 	"sync"
 
 	"github.com/appleboy/go-fcm"
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/logx"
 	"github.com/msalihkarakasli/go-hms-push/push/model"
@@ -54,8 +55,8 @@ type RequestPush struct {
 
 // PushNotification is single notification request
 type PushNotification struct {
-	wg  *sync.WaitGroup
-	log *[]logx.LogPushEntry
+	Wg  *sync.WaitGroup
+	Log *[]logx.LogPushEntry
 
 	// Common
 	ID               string      `json:"notif_id,omitempty"`
@@ -112,22 +113,22 @@ type PushNotification struct {
 
 // WaitDone decrements the WaitGroup counter.
 func (p *PushNotification) WaitDone() {
-	if p.wg != nil {
-		p.wg.Done()
+	if p.Wg != nil {
+		p.Wg.Done()
 	}
 }
 
 // AddWaitCount increments the WaitGroup counter.
 func (p *PushNotification) AddWaitCount() {
-	if p.wg != nil {
-		p.wg.Add(1)
+	if p.Wg != nil {
+		p.Wg.Add(1)
 	}
 }
 
 // AddLog record fail log of notification
 func (p *PushNotification) AddLog(log logx.LogPushEntry) {
-	if p.log != nil {
-		*p.log = append(*p.log, log)
+	if p.Log != nil {
+		*p.Log = append(*p.Log, log)
 	}
 }
 
@@ -199,39 +200,55 @@ func SetProxy(proxy string) error {
 }
 
 // CheckPushConf provide check your yml config.
-func CheckPushConf() error {
-	if !PushConf.Ios.Enabled && !PushConf.Android.Enabled && !PushConf.Huawei.Enabled {
+func CheckPushConf(cfg config.ConfYaml) error {
+	if !cfg.Ios.Enabled && !cfg.Android.Enabled && !cfg.Huawei.Enabled {
 		return errors.New("Please enable iOS, Android or Huawei config in yml config")
 	}
 
-	if PushConf.Ios.Enabled {
-		if PushConf.Ios.KeyPath == "" && PushConf.Ios.KeyBase64 == "" {
+	if cfg.Ios.Enabled {
+		if cfg.Ios.KeyPath == "" && cfg.Ios.KeyBase64 == "" {
 			return errors.New("Missing iOS certificate key")
 		}
 
 		// check certificate file exist
-		if PushConf.Ios.KeyPath != "" {
-			if _, err := os.Stat(PushConf.Ios.KeyPath); os.IsNotExist(err) {
+		if cfg.Ios.KeyPath != "" {
+			if _, err := os.Stat(cfg.Ios.KeyPath); os.IsNotExist(err) {
 				return errors.New("certificate file does not exist")
 			}
 		}
 	}
 
-	if PushConf.Android.Enabled {
-		if PushConf.Android.APIKey == "" {
+	if cfg.Android.Enabled {
+		if cfg.Android.APIKey == "" {
 			return errors.New("Missing Android API Key")
 		}
 	}
 
-	if PushConf.Huawei.Enabled {
-		if PushConf.Huawei.AppSecret == "" {
+	if cfg.Huawei.Enabled {
+		if cfg.Huawei.AppSecret == "" {
 			return errors.New("Missing Huawei App Secret")
 		}
 
-		if PushConf.Huawei.AppID == "" {
+		if cfg.Huawei.AppID == "" {
 			return errors.New("Missing Huawei App ID")
 		}
 	}
 
 	return nil
 }
+
+// SendNotification send notification
+func SendNotification(cfg config.ConfYaml, req PushNotification) {
+	defer func() {
+		req.WaitDone()
+	}()
+
+	switch req.Platform {
+	case core.PlatFormIos:
+		PushToIOS(cfg, req)
+	case core.PlatFormAndroid:
+		PushToAndroid(cfg, req)
+	case core.PlatFormHuawei:
+		PushToHuawei(cfg, req)
+	}
+}
diff --git a/gorush/notification_apns.go b/gorush/notification_apns.go
index 1952ce1..e018c24 100644
--- a/gorush/notification_apns.go
+++ b/gorush/notification_apns.go
@@ -11,6 +11,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/logx"
 	"github.com/appleboy/gorush/status"
@@ -50,23 +51,23 @@ type Sound struct {
 }
 
 // InitAPNSClient use for initialize APNs Client.
-func InitAPNSClient() error {
-	if PushConf.Ios.Enabled {
+func InitAPNSClient(cfg config.ConfYaml) error {
+	if cfg.Ios.Enabled {
 		var err error
 		var authKey *ecdsa.PrivateKey
 		var certificateKey tls.Certificate
 		var ext string
 
-		if PushConf.Ios.KeyPath != "" {
-			ext = filepath.Ext(PushConf.Ios.KeyPath)
+		if cfg.Ios.KeyPath != "" {
+			ext = filepath.Ext(cfg.Ios.KeyPath)
 
 			switch ext {
 			case ".p12":
-				certificateKey, err = certificate.FromP12File(PushConf.Ios.KeyPath, PushConf.Ios.Password)
+				certificateKey, err = certificate.FromP12File(cfg.Ios.KeyPath, cfg.Ios.Password)
 			case ".pem":
-				certificateKey, err = certificate.FromPemFile(PushConf.Ios.KeyPath, PushConf.Ios.Password)
+				certificateKey, err = certificate.FromPemFile(cfg.Ios.KeyPath, cfg.Ios.Password)
 			case ".p8":
-				authKey, err = token.AuthKeyFromFile(PushConf.Ios.KeyPath)
+				authKey, err = token.AuthKeyFromFile(cfg.Ios.KeyPath)
 			default:
 				err = errors.New("wrong certificate key extension")
 			}
@@ -76,9 +77,9 @@ func InitAPNSClient() error {
 
 				return err
 			}
-		} else if PushConf.Ios.KeyBase64 != "" {
-			ext = "." + PushConf.Ios.KeyType
-			key, err := base64.StdEncoding.DecodeString(PushConf.Ios.KeyBase64)
+		} else if cfg.Ios.KeyBase64 != "" {
+			ext = "." + cfg.Ios.KeyType
+			key, err := base64.StdEncoding.DecodeString(cfg.Ios.KeyBase64)
 			if err != nil {
 				logx.LogError.Error("base64 decode error:", err.Error())
 
@@ -86,9 +87,9 @@ func InitAPNSClient() error {
 			}
 			switch ext {
 			case ".p12":
-				certificateKey, err = certificate.FromP12Bytes(key, PushConf.Ios.Password)
+				certificateKey, err = certificate.FromP12Bytes(key, cfg.Ios.Password)
 			case ".pem":
-				certificateKey, err = certificate.FromPemBytes(key, PushConf.Ios.Password)
+				certificateKey, err = certificate.FromPemBytes(key, cfg.Ios.Password)
 			case ".p8":
 				authKey, err = token.AuthKeyFromBytes(key)
 			default:
@@ -103,7 +104,7 @@ func InitAPNSClient() error {
 		}
 
 		if ext == ".p8" {
-			if PushConf.Ios.KeyID == "" || PushConf.Ios.TeamID == "" {
+			if cfg.Ios.KeyID == "" || cfg.Ios.TeamID == "" {
 				msg := "You should provide ios.KeyID and ios.TeamID for P8 token"
 				logx.LogError.Error(msg)
 				return errors.New(msg)
@@ -111,14 +112,14 @@ func InitAPNSClient() error {
 			token := &token.Token{
 				AuthKey: authKey,
 				// KeyID from developer account (Certificates, Identifiers & Profiles -> Keys)
-				KeyID: PushConf.Ios.KeyID,
+				KeyID: cfg.Ios.KeyID,
 				// TeamID from developer account (View Account -> Membership)
-				TeamID: PushConf.Ios.TeamID,
+				TeamID: cfg.Ios.TeamID,
 			}
 
-			ApnsClient, err = newApnsTokenClient(token)
+			ApnsClient, err = newApnsTokenClient(cfg, token)
 		} else {
-			ApnsClient, err = newApnsClient(certificateKey)
+			ApnsClient, err = newApnsClient(cfg, certificateKey)
 		}
 
 		if h2Transport, ok := ApnsClient.HTTPClient.Transport.(*http2.Transport); ok {
@@ -130,21 +131,23 @@ func InitAPNSClient() error {
 
 			return err
 		}
+
+		MaxConcurrentIOSPushes = make(chan struct{}, cfg.Ios.MaxConcurrentPushes)
 	}
 
 	return nil
 }
 
-func newApnsClient(certificate tls.Certificate) (*apns2.Client, error) {
+func newApnsClient(cfg config.ConfYaml, certificate tls.Certificate) (*apns2.Client, error) {
 	var client *apns2.Client
 
-	if PushConf.Ios.Production {
+	if cfg.Ios.Production {
 		client = apns2.NewClient(certificate).Production()
 	} else {
 		client = apns2.NewClient(certificate).Development()
 	}
 
-	if PushConf.Core.HTTPProxy == "" {
+	if cfg.Core.HTTPProxy == "" {
 		return client, nil
 	}
 
@@ -175,16 +178,16 @@ func newApnsClient(certificate tls.Certificate) (*apns2.Client, error) {
 	return client, nil
 }
 
-func newApnsTokenClient(token *token.Token) (*apns2.Client, error) {
+func newApnsTokenClient(cfg config.ConfYaml, token *token.Token) (*apns2.Client, error) {
 	var client *apns2.Client
 
-	if PushConf.Ios.Production {
+	if cfg.Ios.Production {
 		client = apns2.NewTokenClient(token).Production()
 	} else {
 		client = apns2.NewTokenClient(token).Development()
 	}
 
-	if PushConf.Core.HTTPProxy == "" {
+	if cfg.Core.HTTPProxy == "" {
 		return client, nil
 	}
 
@@ -365,13 +368,13 @@ func GetIOSNotification(req PushNotification) *apns2.Notification {
 	return notification
 }
 
-func getApnsClient(req PushNotification) (client *apns2.Client) {
+func getApnsClient(cfg config.ConfYaml, req PushNotification) (client *apns2.Client) {
 	if req.Production {
 		client = ApnsClient.Production()
 	} else if req.Development {
 		client = ApnsClient.Development()
 	} else {
-		if PushConf.Ios.Production {
+		if cfg.Ios.Production {
 			client = ApnsClient.Production()
 		} else {
 			client = ApnsClient.Development()
@@ -381,12 +384,12 @@ func getApnsClient(req PushNotification) (client *apns2.Client) {
 }
 
 // PushToIOS provide send notification to APNs server.
-func PushToIOS(req PushNotification) {
+func PushToIOS(cfg config.ConfYaml, req PushNotification) {
 	logx.LogAccess.Debug("Start push notification for iOS")
 
 	var (
 		retryCount = 0
-		maxRetry   = PushConf.Ios.MaxRetry
+		maxRetry   = cfg.Ios.MaxRetry
 	)
 
 	if req.Retry > 0 && req.Retry < maxRetry {
@@ -397,7 +400,7 @@ Retry:
 	var newTokens []string
 
 	notification := GetIOSNotification(req)
-	client := getApnsClient(req)
+	client := getApnsClient(cfg, req)
 
 	var wg sync.WaitGroup
 	for _, token := range req.Tokens {
@@ -416,17 +419,17 @@ Retry:
 					err = errors.New(res.Reason)
 				}
 				// apns server error
-				logPush(core.FailedPush, token, req, err)
+				logPush(cfg, core.FailedPush, token, req, err)
 
-				if PushConf.Core.Sync {
-					req.AddLog(createLogPushEntry(core.FailedPush, token, req, err))
-				} else if PushConf.Core.FeedbackURL != "" {
+				if cfg.Core.Sync {
+					req.AddLog(createLogPushEntry(cfg, core.FailedPush, token, req, err))
+				} else if cfg.Core.FeedbackURL != "" {
 					go func(logger *logrus.Logger, log logx.LogPushEntry, url string, timeout int64) {
 						err := DispatchFeedback(log, url, timeout)
 						if err != nil {
 							logger.Error(err)
 						}
-					}(logx.LogError, createLogPushEntry(core.FailedPush, token, req, err), PushConf.Core.FeedbackURL, PushConf.Core.FeedbackTimeout)
+					}(logx.LogError, createLogPushEntry(cfg, core.FailedPush, token, req, err), cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 				}
 
 				status.StatStorage.AddIosError(1)
@@ -438,7 +441,7 @@ Retry:
 			}
 
 			if res != nil && res.Sent() {
-				logPush(core.SucceededPush, token, req, nil)
+				logPush(cfg, core.SucceededPush, token, req, nil)
 				status.StatStorage.AddIosSuccess(1)
 			}
 			// free push slot
diff --git a/gorush/notification_apns_test.go b/gorush/notification_apns_test.go
index eca561c..748f9cf 100644
--- a/gorush/notification_apns_test.go
+++ b/gorush/notification_apns_test.go
@@ -1,17 +1,14 @@
 package gorush
 
 import (
-	"context"
 	"encoding/json"
 	"log"
 	"net/http"
 	"net/url"
-	"os"
 	"testing"
 	"time"
 
 	"github.com/appleboy/gorush/config"
-	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/status"
 	"github.com/buger/jsonparser"
 	"github.com/sideshow/apns2"
@@ -27,29 +24,29 @@ const authkeyInvalidP8 = `TUlHSEFnRUFNQk1HQnlxR1NNNDlBZ0VHQ0NxR1NNNDlBd0VIQkcwd2
 const authkeyValidP8 = `LS0tLS1CRUdJTiBQUklWQVRFIEtFWS0tLS0tCk1JR0hBZ0VBTUJNR0J5cUdTTTQ5QWdFR0NDcUdTTTQ5QXdFSEJHMHdhd0lCQVFRZ0ViVnpmUG5aUHhmQXl4cUUKWlYwNWxhQW9KQWwrLzZYdDJPNG1PQjYxMXNPaFJBTkNBQVNnRlRLandKQUFVOTVnKysvdnpLV0hrekFWbU5NSQp0QjV2VGpaT09Jd25FYjcwTXNXWkZJeVVGRDFQOUd3c3R6NCtha0hYN3ZJOEJINmhIbUJtZmVRbAotLS0tLUVORCBQUklWQVRFIEtFWS0tLS0tCg==`
 
 func TestDisabledAndroidIosConf(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
-	PushConf.Android.Enabled = false
-	PushConf.Huawei.Enabled = false
+	cfg, _ := config.LoadConf()
+	cfg.Android.Enabled = false
+	cfg.Huawei.Enabled = false
 
-	err := CheckPushConf()
+	err := CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "Please enable iOS, Android or Huawei config in yml config", err.Error())
 }
 
 func TestMissingIOSCertificate(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = ""
-	err := CheckPushConf()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = ""
+	err := CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "Missing iOS certificate key", err.Error())
 
-	PushConf.Ios.KeyPath = "test.pem"
-	err = CheckPushConf()
+	cfg.Ios.KeyPath = "test.pem"
+	err = CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "certificate file does not exist", err.Error())
@@ -566,166 +563,130 @@ func TestIOSAlertNotificationStructure(t *testing.T) {
 	assert.Contains(t, locArgs, "b")
 }
 
-func TestDisabledIosNotifications(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Ios.Enabled = false
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
-	assert.Nil(t, err)
-
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-
-	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// ios
-			{
-				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
-				Platform: core.PlatFormIos,
-				Message:  "Welcome",
-			},
-			// android
-			{
-				Tokens:   []string{androidToken, androidToken + "_"},
-				Platform: core.PlatFormAndroid,
-				Message:  "Welcome",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 2, count)
-	assert.Equal(t, 0, len(logs))
-}
-
 func TestWrongIosCertificateExt(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "test"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "test"
+	err := InitAPNSClient(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "wrong certificate key extension", err.Error())
 
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = "abcd"
-	PushConf.Ios.KeyType = "abcd"
-	err = InitAPNSClient()
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = "abcd"
+	cfg.Ios.KeyType = "abcd"
+	err = InitAPNSClient(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "wrong certificate key type", err.Error())
 }
 
 func TestAPNSClientDevHost(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.p12"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.p12"
+	err := InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = certificateValidP12
-	PushConf.Ios.KeyType = "p12"
-	err = InitAPNSClient()
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = certificateValidP12
+	cfg.Ios.KeyType = "p12"
+	err = InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 }
 
 func TestAPNSClientProdHost(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.Production = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.Production = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostProduction, ApnsClient.Host)
 
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = certificateValidPEM
-	PushConf.Ios.KeyType = "pem"
-	err = InitAPNSClient()
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = certificateValidPEM
+	cfg.Ios.KeyType = "pem"
+	err = InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostProduction, ApnsClient.Host)
 }
 
 func TestAPNSClientInvaildToken(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/authkey-invalid.p8"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/authkey-invalid.p8"
+	err := InitAPNSClient(cfg)
 	assert.Error(t, err)
 
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = authkeyInvalidP8
-	PushConf.Ios.KeyType = "p8"
-	err = InitAPNSClient()
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = authkeyInvalidP8
+	cfg.Ios.KeyType = "p8"
+	err = InitAPNSClient(cfg)
 	assert.Error(t, err)
 
 	// empty key-id or team-id
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/authkey-valid.p8"
-	err = InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/authkey-valid.p8"
+	err = InitAPNSClient(cfg)
 	assert.Error(t, err)
 
-	PushConf.Ios.KeyID = "key-id"
-	PushConf.Ios.TeamID = ""
-	err = InitAPNSClient()
+	cfg.Ios.KeyID = "key-id"
+	cfg.Ios.TeamID = ""
+	err = InitAPNSClient(cfg)
 	assert.Error(t, err)
 
-	PushConf.Ios.KeyID = ""
-	PushConf.Ios.TeamID = "team-id"
-	err = InitAPNSClient()
+	cfg.Ios.KeyID = ""
+	cfg.Ios.TeamID = "team-id"
+	err = InitAPNSClient(cfg)
 	assert.Error(t, err)
 }
 
 func TestAPNSClientVaildToken(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/authkey-valid.p8"
-	PushConf.Ios.KeyID = "key-id"
-	PushConf.Ios.TeamID = "team-id"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/authkey-valid.p8"
+	cfg.Ios.KeyID = "key-id"
+	cfg.Ios.TeamID = "team-id"
+	err := InitAPNSClient(cfg)
 	assert.NoError(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 
-	PushConf.Ios.Production = true
-	err = InitAPNSClient()
+	cfg.Ios.Production = true
+	err = InitAPNSClient(cfg)
 	assert.NoError(t, err)
 	assert.Equal(t, apns2.HostProduction, ApnsClient.Host)
 
 	// test base64
-	PushConf.Ios.Production = false
-	PushConf.Ios.KeyPath = ""
-	PushConf.Ios.KeyBase64 = authkeyValidP8
-	PushConf.Ios.KeyType = "p8"
-	err = InitAPNSClient()
+	cfg.Ios.Production = false
+	cfg.Ios.KeyPath = ""
+	cfg.Ios.KeyBase64 = authkeyValidP8
+	cfg.Ios.KeyType = "p8"
+	err = InitAPNSClient(cfg)
 	assert.NoError(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 
-	PushConf.Ios.Production = true
-	err = InitAPNSClient()
+	cfg.Ios.Production = true
+	err = InitAPNSClient(cfg)
 	assert.NoError(t, err)
 	assert.Equal(t, apns2.HostProduction, ApnsClient.Host)
 }
 
 func TestAPNSClientUseProxy(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.p12"
-	PushConf.Core.HTTPProxy = "http://127.0.0.1:8080"
-	_ = SetProxy(PushConf.Core.HTTPProxy)
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.p12"
+	cfg.Core.HTTPProxy = "http://127.0.0.1:8080"
+	_ = SetProxy(cfg.Core.HTTPProxy)
+	err := InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 
@@ -733,13 +694,13 @@ func TestAPNSClientUseProxy(t *testing.T) {
 	actualProxyURL, err := ApnsClient.HTTPClient.Transport.(*http.Transport).Proxy(req)
 	assert.Nil(t, err)
 
-	expectedProxyURL, _ := url.ParseRequestURI(PushConf.Core.HTTPProxy)
+	expectedProxyURL, _ := url.ParseRequestURI(cfg.Core.HTTPProxy)
 	assert.Equal(t, expectedProxyURL, actualProxyURL)
 
-	PushConf.Ios.KeyPath = "../certificate/authkey-valid.p8"
-	PushConf.Ios.TeamID = "example.team"
-	PushConf.Ios.KeyID = "example.key"
-	err = InitAPNSClient()
+	cfg.Ios.KeyPath = "../certificate/authkey-valid.p8"
+	cfg.Ios.TeamID = "example.team"
+	cfg.Ios.KeyID = "example.key"
+	err = InitAPNSClient(cfg)
 	assert.Nil(t, err)
 	assert.Equal(t, apns2.HostDevelopment, ApnsClient.Host)
 	assert.NotNil(t, ApnsClient.Token)
@@ -748,21 +709,21 @@ func TestAPNSClientUseProxy(t *testing.T) {
 	actualProxyURL, err = ApnsClient.HTTPClient.Transport.(*http.Transport).Proxy(req)
 	assert.Nil(t, err)
 
-	expectedProxyURL, _ = url.ParseRequestURI(PushConf.Core.HTTPProxy)
+	expectedProxyURL, _ = url.ParseRequestURI(cfg.Core.HTTPProxy)
 	assert.Equal(t, expectedProxyURL, actualProxyURL)
 
 	http.DefaultTransport.(*http.Transport).Proxy = nil
 }
 
 func TestPushToIOS(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
-	MaxConcurrentIOSPushes = make(chan struct{}, PushConf.Ios.MaxConcurrentPushes)
+	cfg, _ := config.LoadConf()
+	MaxConcurrentIOSPushes = make(chan struct{}, cfg.Ios.MaxConcurrentPushes)
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := InitAPNSClient(cfg)
 	assert.Nil(t, err)
-	err = status.InitAppStatus(PushConf)
+	err = status.InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	req := PushNotification{
@@ -772,37 +733,37 @@ func TestPushToIOS(t *testing.T) {
 	}
 
 	// send fail
-	PushToIOS(req)
+	PushToIOS(cfg, req)
 }
 
 func TestApnsHostFromRequest(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := InitAPNSClient(cfg)
 	assert.Nil(t, err)
-	err = status.InitAppStatus(PushConf)
+	err = status.InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	req := PushNotification{
 		Production: true,
 	}
-	client := getApnsClient(req)
+	client := getApnsClient(cfg, req)
 	assert.Equal(t, apns2.HostProduction, client.Host)
 
 	req = PushNotification{
 		Development: true,
 	}
-	client = getApnsClient(req)
+	client = getApnsClient(cfg, req)
 	assert.Equal(t, apns2.HostDevelopment, client.Host)
 
 	req = PushNotification{}
-	PushConf.Ios.Production = true
-	client = getApnsClient(req)
+	cfg.Ios.Production = true
+	client = getApnsClient(cfg, req)
 	assert.Equal(t, apns2.HostProduction, client.Host)
 
-	PushConf.Ios.Production = false
-	client = getApnsClient(req)
+	cfg.Ios.Production = false
+	client = getApnsClient(cfg, req)
 	assert.Equal(t, apns2.HostDevelopment, client.Host)
 }
diff --git a/gorush/notification_fcm.go b/gorush/notification_fcm.go
index fe65b64..f02b709 100644
--- a/gorush/notification_fcm.go
+++ b/gorush/notification_fcm.go
@@ -4,27 +4,29 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/appleboy/go-fcm"
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/logx"
 	"github.com/appleboy/gorush/status"
+
+	"github.com/appleboy/go-fcm"
 	"github.com/sirupsen/logrus"
 )
 
 // InitFCMClient use for initialize FCM Client.
-func InitFCMClient(key string) (*fcm.Client, error) {
+func InitFCMClient(cfg config.ConfYaml, key string) (*fcm.Client, error) {
 	var err error
 
-	if key == "" {
+	if key == "" && cfg.Android.APIKey == "" {
 		return nil, errors.New("Missing Android API Key")
 	}
 
-	if key != PushConf.Android.APIKey {
+	if key != "" && key != cfg.Android.APIKey {
 		return fcm.NewClient(key)
 	}
 
 	if FCMClient == nil {
-		FCMClient, err = fcm.NewClient(key)
+		FCMClient, err = fcm.NewClient(cfg.Android.APIKey)
 		return FCMClient, err
 	}
 
@@ -104,13 +106,13 @@ func GetAndroidNotification(req PushNotification) *fcm.Message {
 }
 
 // PushToAndroid provide send notification to Android server.
-func PushToAndroid(req PushNotification) {
+func PushToAndroid(cfg config.ConfYaml, req PushNotification) {
 	logx.LogAccess.Debug("Start push notification for Android")
 
 	var (
 		client     *fcm.Client
 		retryCount = 0
-		maxRetry   = PushConf.Android.MaxRetry
+		maxRetry   = cfg.Android.MaxRetry
 	)
 
 	if req.Retry > 0 && req.Retry < maxRetry {
@@ -128,9 +130,9 @@ Retry:
 	notification := GetAndroidNotification(req)
 
 	if req.APIKey != "" {
-		client, err = InitFCMClient(req.APIKey)
+		client, err = InitFCMClient(cfg, req.APIKey)
 	} else {
-		client, err = InitFCMClient(PushConf.Android.APIKey)
+		client, err = InitFCMClient(cfg, cfg.Android.APIKey)
 	}
 
 	if err != nil {
@@ -145,28 +147,28 @@ Retry:
 		logx.LogError.Error("FCM server send message error: " + err.Error())
 
 		if req.IsTopic() {
-			if PushConf.Core.Sync {
-				req.AddLog(createLogPushEntry(core.FailedPush, req.To, req, err))
-			} else if PushConf.Core.FeedbackURL != "" {
+			if cfg.Core.Sync {
+				req.AddLog(createLogPushEntry(cfg, core.FailedPush, req.To, req, err))
+			} else if cfg.Core.FeedbackURL != "" {
 				go func(logger *logrus.Logger, log logx.LogPushEntry, url string, timeout int64) {
 					err := DispatchFeedback(log, url, timeout)
 					if err != nil {
 						logger.Error(err)
 					}
-				}(logx.LogError, createLogPushEntry(core.FailedPush, req.To, req, err), PushConf.Core.FeedbackURL, PushConf.Core.FeedbackTimeout)
+				}(logx.LogError, createLogPushEntry(cfg, core.FailedPush, req.To, req, err), cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 			}
 			status.StatStorage.AddAndroidError(1)
 		} else {
 			for _, token := range req.Tokens {
-				if PushConf.Core.Sync {
-					req.AddLog(createLogPushEntry(core.FailedPush, token, req, err))
-				} else if PushConf.Core.FeedbackURL != "" {
+				if cfg.Core.Sync {
+					req.AddLog(createLogPushEntry(cfg, core.FailedPush, token, req, err))
+				} else if cfg.Core.FeedbackURL != "" {
 					go func(logger *logrus.Logger, log logx.LogPushEntry, url string, timeout int64) {
 						err := DispatchFeedback(log, url, timeout)
 						if err != nil {
 							logger.Error(err)
 						}
-					}(logx.LogError, createLogPushEntry(core.FailedPush, token, req, err), PushConf.Core.FeedbackURL, PushConf.Core.FeedbackTimeout)
+					}(logx.LogError, createLogPushEntry(cfg, core.FailedPush, token, req, err), cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 				}
 			}
 			status.StatStorage.AddAndroidError(int64(len(req.Tokens)))
@@ -198,21 +200,21 @@ Retry:
 				newTokens = append(newTokens, to)
 			}
 
-			logPush(core.FailedPush, to, req, result.Error)
-			if PushConf.Core.Sync {
-				req.AddLog(createLogPushEntry(core.FailedPush, to, req, result.Error))
-			} else if PushConf.Core.FeedbackURL != "" {
+			logPush(cfg, core.FailedPush, to, req, result.Error)
+			if cfg.Core.Sync {
+				req.AddLog(createLogPushEntry(cfg, core.FailedPush, to, req, result.Error))
+			} else if cfg.Core.FeedbackURL != "" {
 				go func(logger *logrus.Logger, log logx.LogPushEntry, url string, timeout int64) {
 					err := DispatchFeedback(log, url, timeout)
 					if err != nil {
 						logger.Error(err)
 					}
-				}(logx.LogError, createLogPushEntry(core.FailedPush, to, req, result.Error), PushConf.Core.FeedbackURL, PushConf.Core.FeedbackTimeout)
+				}(logx.LogError, createLogPushEntry(cfg, core.FailedPush, to, req, result.Error), cfg.Core.FeedbackURL, cfg.Core.FeedbackTimeout)
 			}
 			continue
 		}
 
-		logPush(core.SucceededPush, to, req, nil)
+		logPush(cfg, core.SucceededPush, to, req, nil)
 	}
 
 	// result from Send messages to topics
@@ -226,12 +228,12 @@ Retry:
 		logx.LogAccess.Debug("Send Topic Message: ", to)
 		// Success
 		if res.MessageID != 0 {
-			logPush(core.SucceededPush, to, req, nil)
+			logPush(cfg, core.SucceededPush, to, req, nil)
 		} else {
 			// failure
-			logPush(core.FailedPush, to, req, res.Error)
-			if PushConf.Core.Sync {
-				req.AddLog(createLogPushEntry(core.FailedPush, to, req, res.Error))
+			logPush(cfg, core.FailedPush, to, req, res.Error)
+			if cfg.Core.Sync {
+				req.AddLog(createLogPushEntry(cfg, core.FailedPush, to, req, res.Error))
 			}
 		}
 	}
@@ -240,9 +242,9 @@ Retry:
 	if len(res.FailedRegistrationIDs) > 0 {
 		newTokens = append(newTokens, res.FailedRegistrationIDs...)
 
-		logPush(core.FailedPush, notification.To, req, errors.New("device group: partial success or all fails"))
-		if PushConf.Core.Sync {
-			req.AddLog(createLogPushEntry(core.FailedPush, notification.To, req, errors.New("device group: partial success or all fails")))
+		logPush(cfg, core.FailedPush, notification.To, req, errors.New("device group: partial success or all fails"))
+		if cfg.Core.Sync {
+			req.AddLog(createLogPushEntry(cfg, core.FailedPush, notification.To, req, errors.New("device group: partial success or all fails")))
 		}
 	}
 
@@ -255,7 +257,7 @@ Retry:
 	}
 }
 
-func createLogPushEntry(status, token string, req PushNotification, err error) logx.LogPushEntry {
+func createLogPushEntry(cfg config.ConfYaml, status, token string, req PushNotification, err error) logx.LogPushEntry {
 	return logx.GetLogPushEntry(&logx.InputLog{
 		ID:        req.ID,
 		Status:    status,
@@ -263,12 +265,12 @@ func createLogPushEntry(status, token string, req PushNotification, err error) l
 		Message:   req.Message,
 		Platform:  req.Platform,
 		Error:     err,
-		HideToken: PushConf.Log.HideToken,
-		Format:    PushConf.Log.Format,
+		HideToken: cfg.Log.HideToken,
+		Format:    cfg.Log.Format,
 	})
 }
 
-func logPush(status, token string, req PushNotification, err error) {
+func logPush(cfg config.ConfYaml, status, token string, req PushNotification, err error) {
 	logx.LogPush(&logx.InputLog{
 		ID:        req.ID,
 		Status:    status,
@@ -276,7 +278,7 @@ func logPush(status, token string, req PushNotification, err error) {
 		Message:   req.Message,
 		Platform:  req.Platform,
 		Error:     err,
-		HideToken: PushConf.Log.HideToken,
-		Format:    PushConf.Log.Format,
+		HideToken: cfg.Log.HideToken,
+		Format:    cfg.Log.Format,
 	})
 }
diff --git a/gorush/notification_fcm_test.go b/gorush/notification_fcm_test.go
index ff324a6..a3bd9f9 100644
--- a/gorush/notification_fcm_test.go
+++ b/gorush/notification_fcm_test.go
@@ -13,19 +13,21 @@ import (
 )
 
 func TestMissingAndroidAPIKey(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = ""
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = ""
 
-	err := CheckPushConf()
+	err := CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "Missing Android API Key", err.Error())
 }
 
 func TestMissingKeyForInitFCMClient(t *testing.T) {
-	client, err := InitFCMClient("")
+	cfg, _ := config.LoadConf()
+	cfg.Android.APIKey = ""
+	client, err := InitFCMClient(cfg, "")
 
 	assert.Nil(t, client)
 	assert.Error(t, err)
@@ -33,10 +35,10 @@ func TestMissingKeyForInitFCMClient(t *testing.T) {
 }
 
 func TestPushToAndroidWrongToken(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
 
 	req := PushNotification{
 		Tokens:   []string{"aaaaaa", "bbbbb"},
@@ -45,16 +47,16 @@ func TestPushToAndroidWrongToken(t *testing.T) {
 	}
 
 	// Android Success count: 0, Failure count: 2
-	PushToAndroid(req)
+	PushToAndroid(cfg, req)
 }
 
 func TestPushToAndroidRightTokenForJSONLog(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
 	// log for json
-	PushConf.Log.Format = "json"
+	cfg.Log.Format = "json"
 
 	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
 
@@ -64,14 +66,14 @@ func TestPushToAndroidRightTokenForJSONLog(t *testing.T) {
 		Message:  "Welcome",
 	}
 
-	PushToAndroid(req)
+	PushToAndroid(cfg, req)
 }
 
 func TestPushToAndroidRightTokenForStringLog(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
 
 	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
 
@@ -81,15 +83,15 @@ func TestPushToAndroidRightTokenForStringLog(t *testing.T) {
 		Message:  "Welcome",
 	}
 
-	PushToAndroid(req)
+	PushToAndroid(cfg, req)
 }
 
 func TestOverwriteAndroidAPIKey(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Core.Sync = true
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Core.Sync = true
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
 
 	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
 
@@ -100,13 +102,13 @@ func TestOverwriteAndroidAPIKey(t *testing.T) {
 		// overwrite android api key
 		APIKey: "1234",
 
-		log: &[]logx.LogPushEntry{},
+		Log: &[]logx.LogPushEntry{},
 	}
 
 	// FCM server error: 401 error: 401 Unauthorized (Wrong API Key)
-	PushToAndroid(req)
+	PushToAndroid(cfg, req)
 
-	assert.Len(t, *req.log, 2)
+	assert.Len(t, *req.Log, 2)
 }
 
 func TestFCMMessage(t *testing.T) {
@@ -188,10 +190,10 @@ func TestFCMMessage(t *testing.T) {
 }
 
 func TestCheckAndroidMessage(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
 
 	timeToLive := uint(2419201)
 	req := PushNotification{
@@ -201,7 +203,7 @@ func TestCheckAndroidMessage(t *testing.T) {
 		TimeToLive: &timeToLive,
 	}
 
-	PushToAndroid(req)
+	PushToAndroid(cfg, req)
 }
 
 func TestAndroidNotificationStructure(t *testing.T) {
diff --git a/gorush/notification_hms.go b/gorush/notification_hms.go
index 3fb03f7..8447e96 100644
--- a/gorush/notification_hms.go
+++ b/gorush/notification_hms.go
@@ -6,10 +6,11 @@ import (
 	"errors"
 	"sync"
 
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/logx"
 	"github.com/appleboy/gorush/status"
 
-	"github.com/msalihkarakasli/go-hms-push/push/config"
+	c "github.com/msalihkarakasli/go-hms-push/push/config"
 	"github.com/msalihkarakasli/go-hms-push/push/core"
 	"github.com/msalihkarakasli/go-hms-push/push/model"
 )
@@ -21,7 +22,7 @@ var (
 )
 
 // GetPushClient use for create HMS Push
-func GetPushClient(conf *config.Config) (*core.HMSClient, error) {
+func GetPushClient(conf *c.Config) (*core.HMSClient, error) {
 	once.Do(func() {
 		client, err := core.NewHttpClient(conf)
 		if err != nil {
@@ -35,7 +36,7 @@ func GetPushClient(conf *config.Config) (*core.HMSClient, error) {
 }
 
 // InitHMSClient use for initialize HMS Client.
-func InitHMSClient(appSecret, appID string) (*core.HMSClient, error) {
+func InitHMSClient(cfg config.ConfYaml, appSecret, appID string) (*core.HMSClient, error) {
 	if appSecret == "" {
 		return nil, errors.New("Missing Huawei App Secret")
 	}
@@ -44,14 +45,14 @@ func InitHMSClient(appSecret, appID string) (*core.HMSClient, error) {
 		return nil, errors.New("Missing Huawei App ID")
 	}
 
-	conf := &config.Config{
+	conf := &c.Config{
 		AppId:     appID,
 		AppSecret: appSecret,
 		AuthUrl:   "https://oauth-login.cloud.huawei.com/oauth2/v3/token",
 		PushUrl:   "https://push-api.cloud.huawei.com",
 	}
 
-	if appSecret != PushConf.Huawei.AppSecret || appID != PushConf.Huawei.AppID {
+	if appSecret != cfg.Huawei.AppSecret || appID != cfg.Huawei.AppID {
 		return GetPushClient(conf)
 	}
 
@@ -165,13 +166,13 @@ func GetHuaweiNotification(req PushNotification) (*model.MessageRequest, error)
 }
 
 // PushToHuawei provide send notification to Android server.
-func PushToHuawei(req PushNotification) bool {
+func PushToHuawei(cfg config.ConfYaml, req PushNotification) bool {
 	logx.LogAccess.Debug("Start push notification for Huawei")
 
 	var (
 		client     *core.HMSClient
 		retryCount = 0
-		maxRetry   = PushConf.Huawei.MaxRetry
+		maxRetry   = cfg.Huawei.MaxRetry
 	)
 
 	if req.Retry > 0 && req.Retry < maxRetry {
@@ -190,7 +191,7 @@ Retry:
 
 	notification, _ := GetHuaweiNotification(req)
 
-	client, err = InitHMSClient(PushConf.Huawei.AppSecret, PushConf.Huawei.AppID)
+	client, err = InitHMSClient(cfg, cfg.Huawei.AppSecret, cfg.Huawei.AppID)
 
 	if err != nil {
 		// HMS server error
diff --git a/gorush/notification_hms_test.go b/gorush/notification_hms_test.go
index d939dfb..9e00fe3 100644
--- a/gorush/notification_hms_test.go
+++ b/gorush/notification_hms_test.go
@@ -8,31 +8,32 @@ import (
 )
 
 func TestMissingHuaweiAppSecret(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Huawei.Enabled = true
-	PushConf.Huawei.AppSecret = ""
+	cfg.Huawei.Enabled = true
+	cfg.Huawei.AppSecret = ""
 
-	err := CheckPushConf()
+	err := CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "Missing Huawei App Secret", err.Error())
 }
 
 func TestMissingHuaweiAppID(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Huawei.Enabled = true
-	PushConf.Huawei.AppID = ""
+	cfg.Huawei.Enabled = true
+	cfg.Huawei.AppID = ""
 
-	err := CheckPushConf()
+	err := CheckPushConf(cfg)
 
 	assert.Error(t, err)
 	assert.Equal(t, "Missing Huawei App ID", err.Error())
 }
 
 func TestMissingAppSecretForInitHMSClient(t *testing.T) {
-	client, err := InitHMSClient("", "APP_SECRET")
+	cfg, _ := config.LoadConf()
+	client, err := InitHMSClient(cfg, "", "APP_SECRET")
 
 	assert.Nil(t, client)
 	assert.Error(t, err)
@@ -40,7 +41,8 @@ func TestMissingAppSecretForInitHMSClient(t *testing.T) {
 }
 
 func TestMissingAppIDForInitHMSClient(t *testing.T) {
-	client, err := InitHMSClient("APP_ID", "")
+	cfg, _ := config.LoadConf()
+	client, err := InitHMSClient(cfg, "APP_ID", "")
 
 	assert.Nil(t, client)
 	assert.Error(t, err)
diff --git a/gorush/notification_test.go b/gorush/notification_test.go
index d00ae27..7e77562 100644
--- a/gorush/notification_test.go
+++ b/gorush/notification_test.go
@@ -1,210 +1,26 @@
 package gorush
 
 import (
-	"context"
-	"os"
 	"testing"
 
 	"github.com/appleboy/gorush/config"
-	"github.com/appleboy/gorush/core"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCorrectConf(t *testing.T) {
-	PushConf, _ = config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = "xxxxx"
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = "xxxxx"
 
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
 
-	err := CheckPushConf()
+	err := CheckPushConf(cfg)
 
 	assert.NoError(t, err)
 }
 
-func TestSenMultipleNotifications(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
-	assert.Nil(t, err)
-
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-
-	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// ios
-			{
-				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
-				Platform: core.PlatFormIos,
-				Message:  "Welcome",
-			},
-			// android
-			{
-				Tokens:   []string{androidToken, "bbbbb"},
-				Platform: core.PlatFormAndroid,
-				Message:  "Welcome",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 3, count)
-	assert.Equal(t, 0, len(logs))
-}
-
-func TestDisabledAndroidNotifications(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
-	assert.Nil(t, err)
-
-	PushConf.Android.Enabled = false
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-
-	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// ios
-			{
-				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
-				Platform: core.PlatFormIos,
-				Message:  "Welcome",
-			},
-			// android
-			{
-				Tokens:   []string{androidToken, "bbbbb"},
-				Platform: core.PlatFormAndroid,
-				Message:  "Welcome",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 1, count)
-	assert.Equal(t, 0, len(logs))
-}
-
-func TestSyncModeForNotifications(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Ios.Enabled = true
-	PushConf.Ios.KeyPath = "../certificate/certificate-valid.pem"
-	err := InitAPNSClient()
-	assert.Nil(t, err)
-
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-
-	// enable sync mode
-	PushConf.Core.Sync = true
-
-	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// ios
-			{
-				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
-				Platform: core.PlatFormIos,
-				Message:  "Welcome",
-			},
-			// android
-			{
-				Tokens:   []string{androidToken, "bbbbb"},
-				Platform: core.PlatFormAndroid,
-				Message:  "Welcome",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 3, count)
-	assert.Equal(t, 2, len(logs))
-}
-
-func TestSyncModeForTopicNotification(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-	PushConf.Log.HideToken = false
-
-	// enable sync mode
-	PushConf.Core.Sync = true
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// android
-			{
-				// error:InvalidParameters
-				// Check that the provided parameters have the right name and type.
-				To:       "/topics/foo-bar@@@##",
-				Platform: core.PlatFormAndroid,
-				Message:  "This is a Firebase Cloud Messaging Topic Message!",
-			},
-			// android
-			{
-				// success
-				To:       "/topics/foo-bar",
-				Platform: core.PlatFormAndroid,
-				Message:  "This is a Firebase Cloud Messaging Topic Message!",
-			},
-			// android
-			{
-				// success
-				Condition: "'dogs' in topics || 'cats' in topics",
-				Platform:  core.PlatFormAndroid,
-				Message:   "This is a Firebase Cloud Messaging Topic Message!",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 2, count)
-	assert.Equal(t, 1, len(logs))
-}
-
-func TestSyncModeForDeviceGroupNotification(t *testing.T) {
-	ctx := context.Background()
-	PushConf, _ = config.LoadConf("")
-
-	PushConf.Android.Enabled = true
-	PushConf.Android.APIKey = os.Getenv("ANDROID_API_KEY")
-	PushConf.Log.HideToken = false
-
-	// enable sync mode
-	PushConf.Core.Sync = true
-
-	req := RequestPush{
-		Notifications: []PushNotification{
-			// android
-			{
-				To:       "aUniqueKey",
-				Platform: core.PlatFormAndroid,
-				Message:  "This is a Firebase Cloud Messaging Device Group Message!",
-			},
-		},
-	}
-
-	count, logs := HandleNotification(ctx, req)
-	assert.Equal(t, 1, count)
-	assert.Equal(t, 1, len(logs))
-}
-
 func TestSetProxyURL(t *testing.T) {
 	err := SetProxy("87.236.233.92:8080")
 	assert.Error(t, err)
diff --git a/gorush/worker.go b/gorush/worker.go
deleted file mode 100644
index 6ca0cdb..0000000
--- a/gorush/worker.go
+++ /dev/null
@@ -1,124 +0,0 @@
-package gorush
-
-import (
-	"context"
-	"errors"
-	"sync"
-
-	"github.com/appleboy/gorush/core"
-	"github.com/appleboy/gorush/logx"
-	"github.com/appleboy/gorush/status"
-)
-
-// InitWorkers for initialize all workers.
-func InitWorkers(ctx context.Context, wg *sync.WaitGroup, workerNum, queueNum int64) {
-	logx.LogAccess.Info("worker number is ", workerNum, ", queue number is ", queueNum)
-	QueueNotification = make(chan PushNotification, queueNum)
-	for i := int64(0); i < workerNum; i++ {
-		go startWorker(ctx, wg, i)
-	}
-}
-
-// SendNotification is send message to iOS, Android or Huawei
-func SendNotification(ctx context.Context, req PushNotification) {
-	if PushConf.Core.Sync {
-		defer req.WaitDone()
-	}
-
-	switch req.Platform {
-	case core.PlatFormIos:
-		PushToIOS(req)
-	case core.PlatFormAndroid:
-		PushToAndroid(req)
-	case core.PlatFormHuawei:
-		PushToHuawei(req)
-	}
-}
-
-func startWorker(ctx context.Context, wg *sync.WaitGroup, num int64) {
-	defer wg.Done()
-	for notification := range QueueNotification {
-		SendNotification(ctx, notification)
-	}
-	logx.LogAccess.Info("closed the worker num ", num)
-}
-
-// markFailedNotification adds failure logs for all tokens in push notification
-func markFailedNotification(notification *PushNotification, reason string) {
-	logx.LogError.Error(reason)
-	for _, token := range notification.Tokens {
-		notification.AddLog(logx.GetLogPushEntry(&logx.InputLog{
-			ID:        notification.ID,
-			Status:    core.FailedPush,
-			Token:     token,
-			Message:   notification.Message,
-			Platform:  notification.Platform,
-			Error:     errors.New(reason),
-			HideToken: PushConf.Log.HideToken,
-			Format:    PushConf.Log.Format,
-		}))
-	}
-	notification.WaitDone()
-}
-
-// HandleNotification add notification to queue list.
-func HandleNotification(ctx context.Context, req RequestPush) (int, []logx.LogPushEntry) {
-	var count int
-	wg := sync.WaitGroup{}
-	newNotification := []*PushNotification{}
-	for i := range req.Notifications {
-		notification := &req.Notifications[i]
-		switch notification.Platform {
-		case core.PlatFormIos:
-			if !PushConf.Ios.Enabled {
-				continue
-			}
-		case core.PlatFormAndroid:
-			if !PushConf.Android.Enabled {
-				continue
-			}
-		case core.PlatFormHuawei:
-			if !PushConf.Huawei.Enabled {
-				continue
-			}
-		}
-		newNotification = append(newNotification, notification)
-	}
-
-	log := make([]logx.LogPushEntry, 0, count)
-	for _, notification := range newNotification {
-		if PushConf.Core.Sync {
-			notification.wg = &wg
-			notification.log = &log
-			notification.AddWaitCount()
-		}
-		if !tryEnqueue(*notification, QueueNotification) {
-			markFailedNotification(notification, "max capacity reached")
-		}
-		count += len(notification.Tokens)
-		// Count topic message
-		if notification.To != "" {
-			count++
-		}
-	}
-
-	if PushConf.Core.Sync {
-		wg.Wait()
-	}
-
-	status.StatStorage.AddTotalCount(int64(count))
-
-	return count, log
-}
-
-// tryEnqueue tries to enqueue a job to the given job channel. Returns true if
-// the operation was successful, and false if enqueuing would not have been
-// possible without blocking. Job is not enqueued in the latter case.
-func tryEnqueue(job PushNotification, jobChan chan<- PushNotification) bool {
-	select {
-	case jobChan <- job:
-		return true
-	default:
-		return false
-	}
-}
diff --git a/gorush/worker_test.go b/gorush/worker_test.go
deleted file mode 100644
index 1f22319..0000000
--- a/gorush/worker_test.go
+++ /dev/null
@@ -1,17 +0,0 @@
-package gorush
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestTryEnqueue(t *testing.T) {
-	chn := make(chan PushNotification, 2)
-	assert.True(t, tryEnqueue(PushNotification{}, chn))
-	assert.Equal(t, 1, len(chn))
-	assert.True(t, tryEnqueue(PushNotification{}, chn))
-	assert.Equal(t, 2, len(chn))
-	assert.False(t, tryEnqueue(PushNotification{}, chn))
-	assert.Equal(t, 2, len(chn))
-}
diff --git a/logx/log_test.go b/logx/log_test.go
index b9608b2..ee1ed33 100644
--- a/logx/log_test.go
+++ b/logx/log_test.go
@@ -38,75 +38,75 @@ func TestSetLogOut(t *testing.T) {
 }
 
 func TestInitDefaultLog(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
 	// no errors on default config
 	assert.Nil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 
-	PushConf.Log.AccessLevel = "invalid"
+	cfg.Log.AccessLevel = "invalid"
 
 	assert.NotNil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 }
 
 func TestAccessLevel(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Log.AccessLevel = "invalid"
+	cfg.Log.AccessLevel = "invalid"
 
 	assert.NotNil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 }
 
 func TestErrorLevel(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Log.ErrorLevel = "invalid"
+	cfg.Log.ErrorLevel = "invalid"
 
 	assert.NotNil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 }
 
 func TestAccessLogPath(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Log.AccessLog = "logs/access.log"
+	cfg.Log.AccessLog = "logs/access.log"
 
 	assert.NotNil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 }
 
 func TestErrorLogPath(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	PushConf.Log.ErrorLog = "logs/error.log"
+	cfg.Log.ErrorLog = "logs/error.log"
 
 	assert.NotNil(t, InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	))
 }
 
diff --git a/main.go b/main.go
index 79ca450..089934e 100644
--- a/main.go
+++ b/main.go
@@ -11,7 +11,6 @@ import (
 	"os/signal"
 	"path/filepath"
 	"strconv"
-	"sync"
 	"syscall"
 	"time"
 
@@ -19,6 +18,7 @@ import (
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/gorush"
 	"github.com/appleboy/gorush/logx"
+	"github.com/appleboy/gorush/queue"
 	"github.com/appleboy/gorush/router"
 	"github.com/appleboy/gorush/rpc"
 	"github.com/appleboy/gorush/status"
@@ -105,10 +105,8 @@ func main() {
 		os.Exit(0)
 	}
 
-	var err error
-
 	// set default parameters.
-	gorush.PushConf, err = config.LoadConf(configFile)
+	cfg, err := config.LoadConf(configFile)
 	if err != nil {
 		log.Printf("Load yaml config file error: '%v'", err)
 
@@ -116,67 +114,67 @@ func main() {
 	}
 
 	// Initialize push slots for concurrent iOS pushes
-	gorush.MaxConcurrentIOSPushes = make(chan struct{}, gorush.PushConf.Ios.MaxConcurrentPushes)
+	gorush.MaxConcurrentIOSPushes = make(chan struct{}, cfg.Ios.MaxConcurrentPushes)
 
 	if opts.Ios.KeyPath != "" {
-		gorush.PushConf.Ios.KeyPath = opts.Ios.KeyPath
+		cfg.Ios.KeyPath = opts.Ios.KeyPath
 	}
 
 	if opts.Ios.KeyID != "" {
-		gorush.PushConf.Ios.KeyID = opts.Ios.KeyID
+		cfg.Ios.KeyID = opts.Ios.KeyID
 	}
 
 	if opts.Ios.TeamID != "" {
-		gorush.PushConf.Ios.TeamID = opts.Ios.TeamID
+		cfg.Ios.TeamID = opts.Ios.TeamID
 	}
 
 	if opts.Ios.Password != "" {
-		gorush.PushConf.Ios.Password = opts.Ios.Password
+		cfg.Ios.Password = opts.Ios.Password
 	}
 
 	if opts.Android.APIKey != "" {
-		gorush.PushConf.Android.APIKey = opts.Android.APIKey
+		cfg.Android.APIKey = opts.Android.APIKey
 	}
 
 	if opts.Huawei.AppSecret != "" {
-		gorush.PushConf.Huawei.AppSecret = opts.Huawei.AppSecret
+		cfg.Huawei.AppSecret = opts.Huawei.AppSecret
 	}
 
 	if opts.Huawei.AppID != "" {
-		gorush.PushConf.Huawei.AppID = opts.Huawei.AppID
+		cfg.Huawei.AppID = opts.Huawei.AppID
 	}
 
 	if opts.Stat.Engine != "" {
-		gorush.PushConf.Stat.Engine = opts.Stat.Engine
+		cfg.Stat.Engine = opts.Stat.Engine
 	}
 
 	if opts.Stat.Redis.Addr != "" {
-		gorush.PushConf.Stat.Redis.Addr = opts.Stat.Redis.Addr
+		cfg.Stat.Redis.Addr = opts.Stat.Redis.Addr
 	}
 
 	// overwrite server port and address
 	if opts.Core.Port != "" {
-		gorush.PushConf.Core.Port = opts.Core.Port
+		cfg.Core.Port = opts.Core.Port
 	}
 	if opts.Core.Address != "" {
-		gorush.PushConf.Core.Address = opts.Core.Address
+		cfg.Core.Address = opts.Core.Address
 	}
 
 	if err = logx.InitLog(
-		gorush.PushConf.Log.AccessLevel,
-		gorush.PushConf.Log.AccessLog,
-		gorush.PushConf.Log.ErrorLevel,
-		gorush.PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	); err != nil {
 		log.Fatalf("Can't load log module, error: %v", err)
 	}
 
 	if opts.Core.HTTPProxy != "" {
-		gorush.PushConf.Core.HTTPProxy = opts.Core.HTTPProxy
+		cfg.Core.HTTPProxy = opts.Core.HTTPProxy
 	}
 
-	if gorush.PushConf.Core.HTTPProxy != "" {
-		err = gorush.SetProxy(gorush.PushConf.Core.HTTPProxy)
+	if cfg.Core.HTTPProxy != "" {
+		err = gorush.SetProxy(cfg.Core.HTTPProxy)
 
 		if err != nil {
 			logx.LogError.Fatalf("Set Proxy error: %v", err)
@@ -184,7 +182,7 @@ func main() {
 	}
 
 	if ping {
-		if err := pinger(); err != nil {
+		if err := pinger(cfg); err != nil {
 			logx.LogError.Warnf("ping server error: %v", err)
 		}
 		return
@@ -192,7 +190,7 @@ func main() {
 
 	// send android notification
 	if opts.Android.Enabled {
-		gorush.PushConf.Android.Enabled = opts.Android.Enabled
+		cfg.Android.Enabled = opts.Android.Enabled
 		req := gorush.PushNotification{
 			Platform: core.PlatFormAndroid,
 			Message:  message,
@@ -214,18 +212,18 @@ func main() {
 			logx.LogError.Fatal(err)
 		}
 
-		if err := status.InitAppStatus(gorush.PushConf); err != nil {
+		if err := status.InitAppStatus(cfg); err != nil {
 			return
 		}
 
-		gorush.PushToAndroid(req)
+		gorush.PushToAndroid(cfg, req)
 
 		return
 	}
 
 	// send huawei notification
 	if opts.Huawei.Enabled {
-		gorush.PushConf.Huawei.Enabled = opts.Huawei.Enabled
+		cfg.Huawei.Enabled = opts.Huawei.Enabled
 		req := gorush.PushNotification{
 			Platform: core.PlatFormHuawei,
 			Message:  message,
@@ -247,11 +245,11 @@ func main() {
 			logx.LogError.Fatal(err)
 		}
 
-		if err := status.InitAppStatus(gorush.PushConf); err != nil {
+		if err := status.InitAppStatus(cfg); err != nil {
 			return
 		}
 
-		gorush.PushToHuawei(req)
+		gorush.PushToHuawei(cfg, req)
 
 		return
 	}
@@ -259,10 +257,10 @@ func main() {
 	// send ios notification
 	if opts.Ios.Enabled {
 		if opts.Ios.Production {
-			gorush.PushConf.Ios.Production = opts.Ios.Production
+			cfg.Ios.Production = opts.Ios.Production
 		}
 
-		gorush.PushConf.Ios.Enabled = opts.Ios.Enabled
+		cfg.Ios.Enabled = opts.Ios.Enabled
 		req := gorush.PushNotification{
 			Platform: core.PlatFormIos,
 			Message:  message,
@@ -284,68 +282,71 @@ func main() {
 			logx.LogError.Fatal(err)
 		}
 
-		if err := status.InitAppStatus(gorush.PushConf); err != nil {
+		if err := status.InitAppStatus(cfg); err != nil {
 			return
 		}
 
-		if err := gorush.InitAPNSClient(); err != nil {
+		if err := gorush.InitAPNSClient(cfg); err != nil {
 			return
 		}
-		gorush.PushToIOS(req)
+		gorush.PushToIOS(cfg, req)
 
 		return
 	}
 
-	if err = gorush.CheckPushConf(); err != nil {
+	if err = gorush.CheckPushConf(cfg); err != nil {
 		logx.LogError.Fatal(err)
 	}
 
 	if opts.Core.PID.Path != "" {
-		gorush.PushConf.Core.PID.Path = opts.Core.PID.Path
-		gorush.PushConf.Core.PID.Enabled = true
-		gorush.PushConf.Core.PID.Override = true
+		cfg.Core.PID.Path = opts.Core.PID.Path
+		cfg.Core.PID.Enabled = true
+		cfg.Core.PID.Override = true
 	}
 
-	if err = createPIDFile(); err != nil {
+	if err = createPIDFile(cfg); err != nil {
 		logx.LogError.Fatal(err)
 	}
 
-	if err = status.InitAppStatus(gorush.PushConf); err != nil {
+	if err = status.InitAppStatus(cfg); err != nil {
 		logx.LogError.Fatal(err)
 	}
 
+	q := queue.NewQueue(cfg)
+	q.Start()
+
 	finished := make(chan struct{})
-	wg := &sync.WaitGroup{}
-	wg.Add(int(gorush.PushConf.Core.WorkerNum))
 	ctx := withContextFunc(context.Background(), func() {
-		logx.LogAccess.Info("close the notification queue channel, current queue len: ", len(gorush.QueueNotification))
-		close(gorush.QueueNotification)
-		wg.Wait()
-		logx.LogAccess.Info("the notification queue has been clear")
+		logx.LogAccess.Info("close the queue system, current queue usage: ", q.Usage())
+		// stop queue system
+		q.Stop()
+		// wait job completed
+		q.Wait()
 		close(finished)
 		// close the connection with storage
-		logx.LogAccess.Info("close the storage connection: ", gorush.PushConf.Stat.Engine)
+		logx.LogAccess.Info("close the storage connection: ", cfg.Stat.Engine)
 		if err := status.StatStorage.Close(); err != nil {
 			logx.LogError.Fatal("can't close the storage connection: ", err.Error())
 		}
 	})
 
-	gorush.InitWorkers(ctx, wg, gorush.PushConf.Core.WorkerNum, gorush.PushConf.Core.QueueNum)
+	// gorush.InitQueue(cfg.Core.WorkerNum, cfg.Core.QueueNum)
+	// gorush.InitWorkers(ctx, wg, cfg.Core.WorkerNum, cfg.Core.QueueNum)
 
-	if gorush.PushConf.Ios.Enabled {
-		if err = gorush.InitAPNSClient(); err != nil {
+	if cfg.Ios.Enabled {
+		if err = gorush.InitAPNSClient(cfg); err != nil {
 			logx.LogError.Fatal(err)
 		}
 	}
 
-	if gorush.PushConf.Android.Enabled {
-		if _, err = gorush.InitFCMClient(gorush.PushConf.Android.APIKey); err != nil {
+	if cfg.Android.Enabled {
+		if _, err = gorush.InitFCMClient(cfg, cfg.Android.APIKey); err != nil {
 			logx.LogError.Fatal(err)
 		}
 	}
 
-	if gorush.PushConf.Huawei.Enabled {
-		if _, err = gorush.InitHMSClient(gorush.PushConf.Huawei.AppSecret, gorush.PushConf.Huawei.AppID); err != nil {
+	if cfg.Huawei.Enabled {
+		if _, err = gorush.InitHMSClient(cfg, cfg.Huawei.AppSecret, cfg.Huawei.AppID); err != nil {
 			logx.LogError.Fatal(err)
 		}
 	}
@@ -354,12 +355,12 @@ func main() {
 
 	// Run httpd server
 	g.Go(func() error {
-		return router.RunHTTPServer(ctx, gorush.PushConf)
+		return router.RunHTTPServer(ctx, cfg, q)
 	})
 
 	// Run gRPC internal server
 	g.Go(func() error {
-		return rpc.RunGRPCServer(ctx)
+		return rpc.RunGRPCServer(ctx, cfg)
 	})
 
 	// check job completely
@@ -426,7 +427,7 @@ func usage() {
 
 // handles pinging the endpoint and returns an error if the
 // agent is in an unhealthy state.
-func pinger() error {
+func pinger(cfg config.ConfYaml) error {
 	transport := &http.Transport{
 		Dial: (&net.Dialer{
 			Timeout: 5 * time.Second,
@@ -437,7 +438,7 @@ func pinger() error {
 		Timeout:   time.Second * 10,
 		Transport: transport,
 	}
-	resp, err := client.Get("http://localhost:" + gorush.PushConf.Core.Port + gorush.PushConf.API.HealthURI)
+	resp, err := client.Get("http://localhost:" + cfg.Core.Port + cfg.API.HealthURI)
 	if err != nil {
 		return err
 	}
@@ -448,14 +449,14 @@ func pinger() error {
 	return nil
 }
 
-func createPIDFile() error {
-	if !gorush.PushConf.Core.PID.Enabled {
+func createPIDFile(cfg config.ConfYaml) error {
+	if !cfg.Core.PID.Enabled {
 		return nil
 	}
 
-	pidPath := gorush.PushConf.Core.PID.Path
+	pidPath := cfg.Core.PID.Path
 	_, err := os.Stat(pidPath)
-	if os.IsNotExist(err) || gorush.PushConf.Core.PID.Override {
+	if os.IsNotExist(err) || cfg.Core.PID.Override {
 		currentPid := os.Getpid()
 		if err := os.MkdirAll(filepath.Dir(pidPath), os.ModePerm); err != nil {
 			return fmt.Errorf("Can't create PID folder on %v", err)
diff --git a/queue/queue.go b/queue/queue.go
new file mode 100644
index 0000000..5cc6fc8
--- /dev/null
+++ b/queue/queue.go
@@ -0,0 +1,89 @@
+package queue
+
+import (
+	"runtime"
+
+	"github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/logx"
+	"github.com/appleboy/gorush/queue/simple"
+)
+
+type (
+	// A Queue is a message queue.
+	Queue struct {
+		workerCount  int
+		queueCount   int
+		routineGroup *routineGroup
+		quit         chan struct{}
+		worker       Worker
+	}
+)
+
+// NewQueue returns a Queue.
+func NewQueue(cfg config.ConfYaml) *Queue {
+	q := &Queue{
+		workerCount:  int(cfg.Core.WorkerNum),
+		queueCount:   int(cfg.Core.QueueNum),
+		routineGroup: newRoutineGroup(),
+		quit:         make(chan struct{}),
+		worker:       simple.NewWorker(cfg),
+	}
+
+	if q.workerCount != 0 {
+		q.workerCount = runtime.NumCPU()
+	}
+
+	if q.queueCount == 0 {
+		q.queueCount = runtime.NumCPU() << 1
+	}
+
+	return q
+}
+
+// Capacity for queue max size
+func (q *Queue) Capacity() int {
+	return q.worker.Capacity()
+}
+
+// Usage for count of queue usage
+func (q *Queue) Usage() int {
+	return q.worker.Usage()
+}
+
+// Config update current config
+func (q *Queue) Config(cfg config.ConfYaml) {
+	q.worker.Config(cfg)
+}
+
+// Start to enable all worker
+func (q *Queue) Start() {
+	q.startWorker()
+}
+
+// Stop stops q.
+func (q *Queue) Stop() {
+	q.worker.Stop()
+	close(q.quit)
+}
+
+// Wait all process
+func (q *Queue) Wait() {
+	q.routineGroup.Wait()
+}
+
+// Enqueue queue all job
+func (q *Queue) Enqueue(job interface{}) error {
+	return q.worker.Enqueue(job)
+}
+
+func (q *Queue) startWorker() {
+	for i := 0; i < q.workerCount; i++ {
+		go func(num int) {
+			q.routineGroup.Run(func() {
+				logx.LogAccess.Info("started the worker num ", num)
+				q.worker.Run(q.quit)
+				logx.LogAccess.Info("closed the worker num ", num)
+			})
+		}(i)
+	}
+}
diff --git a/queue/simple/simple.go b/queue/simple/simple.go
new file mode 100644
index 0000000..e8e4988
--- /dev/null
+++ b/queue/simple/simple.go
@@ -0,0 +1,59 @@
+package simple
+
+import (
+	"errors"
+
+	"github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/gorush"
+)
+
+// Worker for simple queue using channel
+type Worker struct {
+	cfg               config.ConfYaml
+	queueNotification chan gorush.PushNotification
+}
+
+// Run start the worker
+func (s *Worker) Run(_ chan struct{}) {
+	for notification := range s.queueNotification {
+		gorush.SendNotification(s.cfg, notification)
+	}
+}
+
+// Stop worker
+func (s *Worker) Stop() {
+	close(s.queueNotification)
+}
+
+// Capacity for channel
+func (s *Worker) Capacity() int {
+	return cap(s.queueNotification)
+}
+
+// Usage for count of channel usage
+func (s *Worker) Usage() int {
+	return len(s.queueNotification)
+}
+
+// Enqueue send notification to queue
+func (s *Worker) Enqueue(job interface{}) error {
+	select {
+	case s.queueNotification <- job.(gorush.PushNotification):
+		return nil
+	default:
+		return errors.New("max capacity reached")
+	}
+}
+
+// Config update current config
+func (s *Worker) Config(cfg config.ConfYaml) {
+	s.cfg = cfg
+}
+
+// NewWorker for struct
+func NewWorker(cfg config.ConfYaml) *Worker {
+	return &Worker{
+		cfg:               cfg,
+		queueNotification: make(chan gorush.PushNotification, cfg.Core.QueueNum),
+	}
+}
diff --git a/queue/thread.go b/queue/thread.go
new file mode 100644
index 0000000..473c351
--- /dev/null
+++ b/queue/thread.go
@@ -0,0 +1,24 @@
+package queue
+
+import "sync"
+
+type routineGroup struct {
+	waitGroup sync.WaitGroup
+}
+
+func newRoutineGroup() *routineGroup {
+	return new(routineGroup)
+}
+
+func (g *routineGroup) Run(fn func()) {
+	g.waitGroup.Add(1)
+
+	go func() {
+		defer g.waitGroup.Done()
+		fn()
+	}()
+}
+
+func (g *routineGroup) Wait() {
+	g.waitGroup.Wait()
+}
diff --git a/queue/worker.go b/queue/worker.go
new file mode 100644
index 0000000..39cf42b
--- /dev/null
+++ b/queue/worker.go
@@ -0,0 +1,13 @@
+package queue
+
+import "github.com/appleboy/gorush/config"
+
+// Worker interface
+type Worker interface {
+	Run(chan struct{})
+	Stop()
+	Enqueue(job interface{}) error
+	Capacity() int
+	Usage() int
+	Config(config.ConfYaml)
+}
diff --git a/router/server.go b/router/server.go
index a77e4d3..8fa3164 100644
--- a/router/server.go
+++ b/router/server.go
@@ -3,14 +3,18 @@ package router
 import (
 	"context"
 	"crypto/tls"
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
+	"sync"
 
 	"github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/gorush"
 	"github.com/appleboy/gorush/logx"
 	"github.com/appleboy/gorush/metric"
+	"github.com/appleboy/gorush/queue"
 	"github.com/appleboy/gorush/status"
 
 	api "github.com/appleboy/gin-status-api"
@@ -26,14 +30,12 @@ import (
 	"golang.org/x/crypto/acme/autocert"
 )
 
-var isTerm bool
+var (
+	isTerm bool
+	doOnce sync.Once
+)
 
 func init() {
-	// Support metrics
-	m := metric.NewMetrics(func() int {
-		return len(gorush.QueueNotification)
-	})
-	prometheus.MustRegister(m)
 	isTerm = isatty.IsTerminal(os.Stdout.Fd())
 }
 
@@ -61,7 +63,7 @@ func versionHandler(c *gin.Context) {
 	})
 }
 
-func pushHandler(cfg config.ConfYaml) gin.HandlerFunc {
+func pushHandler(cfg config.ConfYaml, q *queue.Queue) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		var form gorush.RequestPush
 		var msg string
@@ -101,7 +103,7 @@ func pushHandler(cfg config.ConfYaml) gin.HandlerFunc {
 			}
 		}()
 
-		counts, logs := gorush.HandleNotification(ctx, form)
+		counts, logs := handleNotification(ctx, cfg, form, q)
 
 		c.JSON(http.StatusOK, gin.H{
 			"success": "ok",
@@ -121,21 +123,23 @@ func metricsHandler(c *gin.Context) {
 	promhttp.Handler().ServeHTTP(c.Writer, c.Request)
 }
 
-func appStatusHandler(c *gin.Context) {
-	result := status.App{}
+func appStatusHandler(q *queue.Queue) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		result := status.App{}
 
-	result.Version = GetVersion()
-	result.QueueMax = cap(gorush.QueueNotification)
-	result.QueueUsage = len(gorush.QueueNotification)
-	result.TotalCount = status.StatStorage.GetTotalCount()
-	result.Ios.PushSuccess = status.StatStorage.GetIosSuccess()
-	result.Ios.PushError = status.StatStorage.GetIosError()
-	result.Android.PushSuccess = status.StatStorage.GetAndroidSuccess()
-	result.Android.PushError = status.StatStorage.GetAndroidError()
-	result.Huawei.PushSuccess = status.StatStorage.GetHuaweiSuccess()
-	result.Huawei.PushError = status.StatStorage.GetHuaweiError()
+		result.Version = GetVersion()
+		result.QueueMax = q.Capacity()
+		result.QueueUsage = q.Usage()
+		result.TotalCount = status.StatStorage.GetTotalCount()
+		result.Ios.PushSuccess = status.StatStorage.GetIosSuccess()
+		result.Ios.PushError = status.StatStorage.GetIosError()
+		result.Android.PushSuccess = status.StatStorage.GetAndroidSuccess()
+		result.Android.PushError = status.StatStorage.GetAndroidError()
+		result.Huawei.PushSuccess = status.StatStorage.GetHuaweiSuccess()
+		result.Huawei.PushError = status.StatStorage.GetHuaweiError()
 
-	c.JSON(http.StatusOK, result)
+		c.JSON(http.StatusOK, result)
+	}
 }
 
 func sysStatsHandler() gin.HandlerFunc {
@@ -153,7 +157,7 @@ func StatMiddleware() gin.HandlerFunc {
 	}
 }
 
-func autoTLSServer(cfg config.ConfYaml) *http.Server {
+func autoTLSServer(cfg config.ConfYaml, q *queue.Queue) *http.Server {
 	m := autocert.Manager{
 		Prompt:     autocert.AcceptTOS,
 		HostPolicy: autocert.HostWhitelist(cfg.Core.AutoTLS.Host),
@@ -163,11 +167,11 @@ func autoTLSServer(cfg config.ConfYaml) *http.Server {
 	return &http.Server{
 		Addr:      ":https",
 		TLSConfig: &tls.Config{GetCertificate: m.GetCertificate},
-		Handler:   routerEngine(cfg),
+		Handler:   routerEngine(cfg, q),
 	}
 }
 
-func routerEngine(cfg config.ConfYaml) *gin.Engine {
+func routerEngine(cfg config.ConfYaml, q *queue.Queue) *gin.Engine {
 	zerolog.SetGlobalLevel(zerolog.InfoLevel)
 	if cfg.Core.Mode == "debug" {
 		zerolog.SetGlobalLevel(zerolog.DebugLevel)
@@ -184,6 +188,14 @@ func routerEngine(cfg config.ConfYaml) *gin.Engine {
 		)
 	}
 
+	// Support metrics
+	doOnce.Do(func() {
+		m := metric.NewMetrics(func() int {
+			return q.Usage()
+		})
+		prometheus.MustRegister(m)
+	})
+
 	// set server mode
 	gin.SetMode(cfg.Core.Mode)
 
@@ -202,10 +214,10 @@ func routerEngine(cfg config.ConfYaml) *gin.Engine {
 	r.Use(StatMiddleware())
 
 	r.GET(cfg.API.StatGoURI, api.GinHandler)
-	r.GET(cfg.API.StatAppURI, appStatusHandler)
+	r.GET(cfg.API.StatAppURI, appStatusHandler(q))
 	r.GET(cfg.API.ConfigURI, configHandler(cfg))
 	r.GET(cfg.API.SysStatURI, sysStatsHandler())
-	r.POST(cfg.API.PushURI, pushHandler(cfg))
+	r.POST(cfg.API.PushURI, pushHandler(cfg, q))
 	r.GET(cfg.API.MetricURI, metricsHandler)
 	r.GET(cfg.API.HealthURI, heartbeatHandler)
 	r.HEAD(cfg.API.HealthURI, heartbeatHandler)
@@ -214,3 +226,73 @@ func routerEngine(cfg config.ConfYaml) *gin.Engine {
 
 	return r
 }
+
+// markFailedNotification adds failure logs for all tokens in push notification
+func markFailedNotification(cfg config.ConfYaml, notification *gorush.PushNotification, reason string) {
+	logx.LogError.Error(reason)
+	for _, token := range notification.Tokens {
+		notification.AddLog(logx.GetLogPushEntry(&logx.InputLog{
+			ID:        notification.ID,
+			Status:    core.FailedPush,
+			Token:     token,
+			Message:   notification.Message,
+			Platform:  notification.Platform,
+			Error:     errors.New(reason),
+			HideToken: cfg.Log.HideToken,
+			Format:    cfg.Log.Format,
+		}))
+	}
+	notification.WaitDone()
+}
+
+// HandleNotification add notification to queue list.
+func handleNotification(ctx context.Context, cfg config.ConfYaml, req gorush.RequestPush, q *queue.Queue) (int, []logx.LogPushEntry) {
+	var count int
+	wg := sync.WaitGroup{}
+	newNotification := []*gorush.PushNotification{}
+	for i := range req.Notifications {
+		notification := &req.Notifications[i]
+		switch notification.Platform {
+		case core.PlatFormIos:
+			if !cfg.Ios.Enabled {
+				continue
+			}
+		case core.PlatFormAndroid:
+			if !cfg.Android.Enabled {
+				continue
+			}
+		case core.PlatFormHuawei:
+			if !cfg.Huawei.Enabled {
+				continue
+			}
+		}
+		newNotification = append(newNotification, notification)
+	}
+
+	log := make([]logx.LogPushEntry, 0, count)
+	for _, notification := range newNotification {
+		if cfg.Core.Sync {
+			notification.Wg = &wg
+			notification.Log = &log
+			notification.AddWaitCount()
+		}
+
+		if err := q.Enqueue(*notification); err != nil {
+			markFailedNotification(cfg, notification, "max capacity reached")
+		}
+
+		count += len(notification.Tokens)
+		// Count topic message
+		if notification.To != "" {
+			count++
+		}
+	}
+
+	if cfg.Core.Sync {
+		wg.Wait()
+	}
+
+	status.StatStorage.AddTotalCount(int64(count))
+
+	return count, log
+}
diff --git a/router/server_lambda.go b/router/server_lambda.go
index 40f1b05..299e44e 100644
--- a/router/server_lambda.go
+++ b/router/server_lambda.go
@@ -8,12 +8,13 @@ import (
 
 	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/logx"
+	"github.com/appleboy/gorush/queue"
 
 	"github.com/apex/gateway"
 )
 
 // RunHTTPServer provide run http or https protocol.
-func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, s ...*http.Server) (err error) {
+func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, q *queue.Queue, s ...*http.Server) (err error) {
 	if !cfg.Core.Enabled {
 		logx.LogAccess.Debug("httpd server is disabled.")
 		return nil
@@ -21,5 +22,5 @@ func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, s ...*http.Server)
 
 	logx.LogAccess.Info("HTTPD server is running on " + cfg.Core.Port + " port.")
 
-	return gateway.ListenAndServe(cfg.Core.Address+":"+cfg.Core.Port, routerEngine(cfg))
+	return gateway.ListenAndServe(cfg.Core.Address+":"+cfg.Core.Port, routerEngine(cfg, q))
 }
diff --git a/router/server_normal.go b/router/server_normal.go
index 00445ba..7884246 100644
--- a/router/server_normal.go
+++ b/router/server_normal.go
@@ -12,12 +12,13 @@ import (
 
 	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/logx"
+	"github.com/appleboy/gorush/queue"
 
 	"golang.org/x/sync/errgroup"
 )
 
 // RunHTTPServer provide run http or https protocol.
-func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, s ...*http.Server) (err error) {
+func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, q *queue.Queue, s ...*http.Server) (err error) {
 	var server *http.Server
 
 	if !cfg.Core.Enabled {
@@ -28,7 +29,7 @@ func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, s ...*http.Server)
 	if len(s) == 0 {
 		server = &http.Server{
 			Addr:    cfg.Core.Address + ":" + cfg.Core.Port,
-			Handler: routerEngine(cfg),
+			Handler: routerEngine(cfg, q),
 		}
 	} else {
 		server = s[0]
@@ -36,7 +37,7 @@ func RunHTTPServer(ctx context.Context, cfg config.ConfYaml, s ...*http.Server)
 
 	logx.LogAccess.Info("HTTPD server is running on " + cfg.Core.Port + " port.")
 	if cfg.Core.AutoTLS.Enabled {
-		return startServer(ctx, autoTLSServer(cfg), cfg)
+		return startServer(ctx, autoTLSServer(cfg, q), cfg)
 	} else if cfg.Core.SSL {
 		config := &tls.Config{
 			MinVersion: tls.VersionTLS10,
diff --git a/router/server_test.go b/router/server_test.go
index 663e4a2..716ee94 100644
--- a/router/server_test.go
+++ b/router/server_test.go
@@ -15,6 +15,7 @@ import (
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/gorush"
 	"github.com/appleboy/gorush/logx"
+	"github.com/appleboy/gorush/queue"
 	"github.com/appleboy/gorush/status"
 
 	"github.com/appleboy/gofight/v2"
@@ -23,7 +24,10 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-var goVersion = runtime.Version()
+var (
+	goVersion = runtime.Version()
+	q         *queue.Queue
+)
 
 func TestMain(m *testing.M) {
 	cfg := initTest()
@@ -40,11 +44,14 @@ func TestMain(m *testing.M) {
 		log.Fatal(err)
 	}
 
+	q = queue.NewQueue(cfg)
+	q.Start()
+	defer q.Stop()
 	m.Run()
 }
 
 func initTest() config.ConfYaml {
-	cfg, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 	cfg.Core.Mode = "test"
 	return cfg
 }
@@ -88,7 +95,7 @@ func TestRunNormalServer(t *testing.T) {
 
 	ctx, cancel := context.WithCancel(context.Background())
 	go func() {
-		assert.NoError(t, RunHTTPServer(ctx, cfg))
+		assert.NoError(t, RunHTTPServer(ctx, cfg, q))
 	}()
 
 	defer func() {
@@ -112,7 +119,7 @@ func TestRunTLSServer(t *testing.T) {
 
 	ctx, cancel := context.WithCancel(context.Background())
 	go func() {
-		assert.NoError(t, RunHTTPServer(ctx, cfg))
+		assert.NoError(t, RunHTTPServer(ctx, cfg, q))
 	}()
 
 	defer func() {
@@ -140,7 +147,7 @@ func TestRunTLSBase64Server(t *testing.T) {
 
 	ctx, cancel := context.WithCancel(context.Background())
 	go func() {
-		assert.NoError(t, RunHTTPServer(ctx, cfg))
+		assert.NoError(t, RunHTTPServer(ctx, cfg, q))
 	}()
 
 	defer func() {
@@ -159,7 +166,7 @@ func TestRunAutoTLSServer(t *testing.T) {
 	cfg.Core.AutoTLS.Enabled = true
 	ctx, cancel := context.WithCancel(context.Background())
 	go func() {
-		assert.NoError(t, RunHTTPServer(ctx, cfg))
+		assert.NoError(t, RunHTTPServer(ctx, cfg, q))
 	}()
 
 	defer func() {
@@ -179,7 +186,7 @@ func TestLoadTLSCertError(t *testing.T) {
 	cfg.Core.CertPath = "../config/config.yml"
 	cfg.Core.KeyPath = "../config/config.yml"
 
-	assert.Error(t, RunHTTPServer(context.Background(), cfg))
+	assert.Error(t, RunHTTPServer(context.Background(), cfg, q))
 }
 
 func TestMissingTLSCertcfgg(t *testing.T) {
@@ -192,8 +199,8 @@ func TestMissingTLSCertcfgg(t *testing.T) {
 	cfg.Core.CertBase64 = ""
 	cfg.Core.KeyBase64 = ""
 
-	err := RunHTTPServer(context.Background(), cfg)
-	assert.Error(t, RunHTTPServer(context.Background(), cfg))
+	err := RunHTTPServer(context.Background(), cfg, q)
+	assert.Error(t, RunHTTPServer(context.Background(), cfg, q))
 	assert.Equal(t, "missing https cert config", err.Error())
 }
 
@@ -206,7 +213,7 @@ func TestRootHandler(t *testing.T) {
 	cfg.Log.Format = "json"
 
 	r.GET("/").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			data := r.Body.Bytes()
 
 			value, _ := jsonparser.GetString(data, "text")
@@ -223,7 +230,7 @@ func TestAPIStatusGoHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/api/stat/go").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			data := r.Body.Bytes()
 
 			value, _ := jsonparser.GetString(data, "go_version")
@@ -242,7 +249,7 @@ func TestAPIStatusAppHandler(t *testing.T) {
 	SetVersion(appVersion)
 
 	r.GET("/api/stat/app").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			data := r.Body.Bytes()
 
 			value, _ := jsonparser.GetString(data, "version")
@@ -258,7 +265,7 @@ func TestAPIConfigHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/api/config").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusCreated, r.Code)
 		})
 }
@@ -270,7 +277,7 @@ func TestMissingNotificationsParameter(t *testing.T) {
 
 	// missing notifications parameter.
 	r.POST("/api/push").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusBadRequest, r.Code)
 			assert.Equal(t, "application/json; charset=utf-8", r.HeaderMap.Get("Content-Type"))
 		})
@@ -286,7 +293,7 @@ func TestEmptyNotifications(t *testing.T) {
 		SetJSON(gofight.D{
 			"notifications": []gorush.PushNotification{},
 		}).
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusBadRequest, r.Code)
 		})
 }
@@ -314,8 +321,8 @@ func TestMutableContent(t *testing.T) {
 				},
 			},
 		}).
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
-			// json: cannot unmarshal number into Go struct field PushNotification.mutable_content of type bool
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+			// json: cannot unmarshal number into Go struct field gorush.PushNotification.mutable_content of type bool
 			assert.Equal(t, http.StatusBadRequest, r.Code)
 		})
 }
@@ -343,7 +350,7 @@ func TestOutOfRangeMaxNotifications(t *testing.T) {
 				},
 			},
 		}).
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusBadRequest, r.Code)
 		})
 }
@@ -369,7 +376,7 @@ func TestSuccessPushHandler(t *testing.T) {
 				},
 			},
 		}).
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 		})
 }
@@ -380,7 +387,7 @@ func TestSysStatsHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/sys/stats").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 		})
 }
@@ -391,7 +398,7 @@ func TestMetricsHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/metrics").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 		})
 }
@@ -402,7 +409,7 @@ func TestGETHeartbeatHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/healthz").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 		})
 }
@@ -413,7 +420,7 @@ func TestHEADHeartbeatHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.HEAD("/healthz").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 		})
 }
@@ -425,7 +432,7 @@ func TestVersionHandler(t *testing.T) {
 	r := gofight.New()
 
 	r.GET("/version").
-		Run(routerEngine(cfg), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
+		Run(routerEngine(cfg, q), func(r gofight.HTTPResponse, rq gofight.HTTPRequest) {
 			assert.Equal(t, http.StatusOK, r.Code)
 			data := r.Body.Bytes()
 
@@ -438,8 +445,231 @@ func TestVersionHandler(t *testing.T) {
 func TestDisabledHTTPServer(t *testing.T) {
 	cfg := initTest()
 	cfg.Core.Enabled = false
-	err := RunHTTPServer(context.Background(), cfg)
+	err := RunHTTPServer(context.Background(), cfg, q)
 	cfg.Core.Enabled = true
 
 	assert.Nil(t, err)
 }
+
+func TestSenMultipleNotifications(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := gorush.InitAPNSClient(cfg)
+	assert.Nil(t, err)
+
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	q.Config(cfg)
+
+	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// ios
+			{
+				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
+				Platform: core.PlatFormIos,
+				Message:  "Welcome",
+			},
+			// android
+			{
+				Tokens:   []string{androidToken, "bbbbb"},
+				Platform: core.PlatFormAndroid,
+				Message:  "Welcome",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 3, count)
+	assert.Equal(t, 0, len(logs))
+}
+
+func TestDisabledAndroidNotifications(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := gorush.InitAPNSClient(cfg)
+	assert.Nil(t, err)
+
+	cfg.Android.Enabled = false
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	q.Config(cfg)
+
+	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// ios
+			{
+				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
+				Platform: core.PlatFormIos,
+				Message:  "Welcome",
+			},
+			// android
+			{
+				Tokens:   []string{androidToken, "bbbbb"},
+				Platform: core.PlatFormAndroid,
+				Message:  "Welcome",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 1, count)
+	assert.Equal(t, 0, len(logs))
+}
+
+func TestSyncModeForNotifications(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Ios.Enabled = true
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := gorush.InitAPNSClient(cfg)
+	assert.Nil(t, err)
+
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+
+	// enable sync mode
+	cfg.Core.Sync = true
+	q.Config(cfg)
+
+	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// ios
+			{
+				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
+				Platform: core.PlatFormIos,
+				Message:  "Welcome",
+			},
+			// android
+			{
+				Tokens:   []string{androidToken, "bbbbb"},
+				Platform: core.PlatFormAndroid,
+				Message:  "Welcome",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 3, count)
+	assert.Equal(t, 2, len(logs))
+}
+
+func TestSyncModeForTopicNotification(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Log.HideToken = false
+
+	// enable sync mode
+	cfg.Core.Sync = true
+	q.Config(cfg)
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// android
+			{
+				// error:InvalidParameters
+				// Check that the provided parameters have the right name and type.
+				To:       "/topics/foo-bar@@@##",
+				Platform: core.PlatFormAndroid,
+				Message:  "This is a Firebase Cloud Messaging Topic Message!",
+			},
+			// android
+			{
+				// success
+				To:       "/topics/foo-bar",
+				Platform: core.PlatFormAndroid,
+				Message:  "This is a Firebase Cloud Messaging Topic Message!",
+			},
+			// android
+			{
+				// success
+				Condition: "'dogs' in topics || 'cats' in topics",
+				Platform:  core.PlatFormAndroid,
+				Message:   "This is a Firebase Cloud Messaging Topic Message!",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 2, count)
+	assert.Equal(t, 1, len(logs))
+}
+
+func TestSyncModeForDeviceGroupNotification(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	cfg.Log.HideToken = false
+
+	// enable sync mode
+	cfg.Core.Sync = true
+	q.Config(cfg)
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// android
+			{
+				To:       "aUniqueKey",
+				Platform: core.PlatFormAndroid,
+				Message:  "This is a Firebase Cloud Messaging Device Group Message!",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 1, count)
+	assert.Equal(t, 1, len(logs))
+}
+
+func TestDisabledIosNotifications(t *testing.T) {
+	ctx := context.Background()
+	cfg := initTest()
+
+	cfg.Ios.Enabled = false
+	cfg.Ios.KeyPath = "../certificate/certificate-valid.pem"
+	err := gorush.InitAPNSClient(cfg)
+	assert.Nil(t, err)
+
+	cfg.Android.Enabled = true
+	cfg.Android.APIKey = os.Getenv("ANDROID_API_KEY")
+	q.Config(cfg)
+
+	androidToken := os.Getenv("ANDROID_TEST_TOKEN")
+
+	req := gorush.RequestPush{
+		Notifications: []gorush.PushNotification{
+			// ios
+			{
+				Tokens:   []string{"11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"},
+				Platform: core.PlatFormIos,
+				Message:  "Welcome",
+			},
+			// android
+			{
+				Tokens:   []string{androidToken, androidToken + "_"},
+				Platform: core.PlatFormAndroid,
+				Message:  "Welcome",
+			},
+		},
+	}
+
+	count, logs := handleNotification(ctx, cfg, req, q)
+	assert.Equal(t, 2, count)
+	assert.Equal(t, 0, len(logs))
+}
diff --git a/rpc/server.go b/rpc/server.go
index cfa3c1b..5aa4077 100644
--- a/rpc/server.go
+++ b/rpc/server.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/core"
 	"github.com/appleboy/gorush/gorush"
 	"github.com/appleboy/gorush/logx"
@@ -19,14 +20,16 @@ import (
 
 // Server is used to implement gorush grpc server.
 type Server struct {
-	mu sync.Mutex
+	cfg config.ConfYaml
+	mu  sync.Mutex
 	// statusMap stores the serving status of the services this Server monitors.
 	statusMap map[string]proto.HealthCheckResponse_ServingStatus
 }
 
 // NewServer returns a new Server.
-func NewServer() *Server {
+func NewServer(cfg config.ConfYaml) *Server {
 	return &Server{
+		cfg:       cfg,
 		statusMap: make(map[string]proto.HealthCheckResponse_ServingStatus),
 	}
 }
@@ -98,7 +101,7 @@ func (s *Server) Send(ctx context.Context, in *proto.NotificationRequest) (*prot
 		}
 	}
 
-	go gorush.SendNotification(ctx, notification)
+	go gorush.SendNotification(s.cfg, notification)
 
 	return &proto.NotificationReply{
 		Success: true,
@@ -107,26 +110,26 @@ func (s *Server) Send(ctx context.Context, in *proto.NotificationRequest) (*prot
 }
 
 // RunGRPCServer run gorush grpc server
-func RunGRPCServer(ctx context.Context) error {
-	if !gorush.PushConf.GRPC.Enabled {
+func RunGRPCServer(ctx context.Context, cfg config.ConfYaml) error {
+	if !cfg.GRPC.Enabled {
 		logx.LogAccess.Info("gRPC server is disabled.")
 		return nil
 	}
 
 	s := grpc.NewServer()
-	rpcSrv := NewServer()
+	rpcSrv := NewServer(cfg)
 	proto.RegisterGorushServer(s, rpcSrv)
 	proto.RegisterHealthServer(s, rpcSrv)
 
 	// Register reflection service on gRPC server.
 	reflection.Register(s)
 
-	lis, err := net.Listen("tcp", ":"+gorush.PushConf.GRPC.Port)
+	lis, err := net.Listen("tcp", ":"+cfg.GRPC.Port)
 	if err != nil {
 		logx.LogError.Fatalln(err)
 		return err
 	}
-	logx.LogAccess.Info("gRPC server is running on " + gorush.PushConf.GRPC.Port + " port.")
+	logx.LogAccess.Info("gRPC server is running on " + cfg.GRPC.Port + " port.")
 	go func() {
 		select {
 		case <-ctx.Done():
diff --git a/rpc/server_test.go b/rpc/server_test.go
index 75c30c0..545e308 100644
--- a/rpc/server_test.go
+++ b/rpc/server_test.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"testing"
 
-	"github.com/appleboy/gorush/gorush"
+	"github.com/appleboy/gorush/config"
 	"github.com/appleboy/gorush/logx"
 
 	"google.golang.org/grpc"
@@ -13,22 +13,29 @@ import (
 
 const gRPCAddr = "localhost:9000"
 
+func initTest() config.ConfYaml {
+	cfg, _ := config.LoadConf()
+	cfg.Core.Mode = "test"
+	return cfg
+}
+
 func TestGracefulShutDownGRPCServer(t *testing.T) {
+	cfg := initTest()
 	// server configs
 	logx.InitLog(
-		gorush.PushConf.Log.AccessLevel,
-		gorush.PushConf.Log.AccessLog,
-		gorush.PushConf.Log.ErrorLevel,
-		gorush.PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	)
-	gorush.PushConf.GRPC.Enabled = true
-	gorush.PushConf.GRPC.Port = "9000"
-	gorush.PushConf.Log.Format = "json"
+	cfg.GRPC.Enabled = true
+	cfg.GRPC.Port = "9000"
+	cfg.Log.Format = "json"
 
 	// Run gRPC server
 	ctx, gRPCContextCancel := context.WithCancel(context.Background())
 	go func() {
-		if err := RunGRPCServer(ctx); err != nil {
+		if err := RunGRPCServer(ctx, cfg); err != nil {
 			panic(err)
 		}
 	}()
diff --git a/status/status_test.go b/status/status_test.go
index 589eacc..126425f 100644
--- a/status/status_test.go
+++ b/status/status_test.go
@@ -12,12 +12,12 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	PushConf, _ := config.LoadConf("")
+	cfg, _ := config.LoadConf()
 	if err := logx.InitLog(
-		PushConf.Log.AccessLevel,
-		PushConf.Log.AccessLog,
-		PushConf.Log.ErrorLevel,
-		PushConf.Log.ErrorLog,
+		cfg.Log.AccessLevel,
+		cfg.Log.AccessLog,
+		cfg.Log.ErrorLevel,
+		cfg.Log.ErrorLog,
 	); err != nil {
 		log.Fatal(err)
 	}
@@ -26,9 +26,9 @@ func TestMain(m *testing.M) {
 }
 
 func TestStorageDriverExist(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "Test"
-	err := InitAppStatus(PushConf)
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "Test"
+	err := InitAppStatus(cfg)
 	assert.Error(t, err)
 }
 
@@ -37,9 +37,9 @@ func TestStatForMemoryEngine(t *testing.T) {
 	time.Sleep(5 * time.Second)
 
 	var val int64
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "memory"
-	err := InitAppStatus(PushConf)
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "memory"
+	err := InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	StatStorage.AddTotalCount(100)
@@ -61,31 +61,31 @@ func TestStatForMemoryEngine(t *testing.T) {
 }
 
 func TestRedisServerSuccess(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "redis"
-	PushConf.Stat.Redis.Addr = "redis:6379"
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "redis"
+	cfg.Stat.Redis.Addr = "redis:6379"
 
-	err := InitAppStatus(PushConf)
+	err := InitAppStatus(cfg)
 
 	assert.NoError(t, err)
 }
 
 func TestRedisServerError(t *testing.T) {
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "redis"
-	PushConf.Stat.Redis.Addr = "redis:6370"
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "redis"
+	cfg.Stat.Redis.Addr = "redis:6370"
 
-	err := InitAppStatus(PushConf)
+	err := InitAppStatus(cfg)
 
 	assert.Error(t, err)
 }
 
 func TestStatForRedisEngine(t *testing.T) {
 	var val int64
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "redis"
-	PushConf.Stat.Redis.Addr = "redis:6379"
-	err := InitAppStatus(PushConf)
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "redis"
+	cfg.Stat.Redis.Addr = "redis:6379"
+	err := InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	StatStorage.Init()
@@ -112,8 +112,8 @@ func TestStatForRedisEngine(t *testing.T) {
 func TestDefaultEngine(t *testing.T) {
 	var val int64
 	// defaul engine as memory
-	PushConf, _ := config.LoadConf("")
-	err := InitAppStatus(PushConf)
+	cfg, _ := config.LoadConf()
+	err := InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	StatStorage.Reset()
@@ -138,9 +138,9 @@ func TestDefaultEngine(t *testing.T) {
 
 func TestStatForBoltDBEngine(t *testing.T) {
 	var val int64
-	PushConf, _ := config.LoadConf("")
-	PushConf.Stat.Engine = "boltdb"
-	err := InitAppStatus(PushConf)
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Engine = "boltdb"
+	err := InitAppStatus(cfg)
 	assert.Nil(t, err)
 
 	StatStorage.Reset()
@@ -165,7 +165,7 @@ func TestStatForBoltDBEngine(t *testing.T) {
 
 // func TestStatForBuntDBEngine(t *testing.T) {
 // 	var val int64
-// 	PushConf.Stat.Engine = "buntdb"
+// 	cfg.Stat.Engine = "buntdb"
 // 	err := InitAppStatus()
 // 	assert.Nil(t, err)
 
@@ -191,7 +191,7 @@ func TestStatForBoltDBEngine(t *testing.T) {
 
 // func TestStatForLevelDBEngine(t *testing.T) {
 // 	var val int64
-// 	PushConf.Stat.Engine = "leveldb"
+// 	cfg.Stat.Engine = "leveldb"
 // 	err := InitAppStatus()
 // 	assert.Nil(t, err)
 
@@ -217,7 +217,7 @@ func TestStatForBoltDBEngine(t *testing.T) {
 
 // func TestStatForBadgerEngine(t *testing.T) {
 // 	var val int64
-// 	PushConf.Stat.Engine = "badger"
+// 	cfg.Stat.Engine = "badger"
 // 	err := InitAppStatus()
 // 	assert.Nil(t, err)
 
diff --git a/storage/badger/badger_test.go b/storage/badger/badger_test.go
index 033e11d..3c26b27 100644
--- a/storage/badger/badger_test.go
+++ b/storage/badger/badger_test.go
@@ -3,16 +3,16 @@ package badger
 import (
 	"testing"
 
-	c "github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/config"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestBadgerEngine(t *testing.T) {
 	var val int64
 
-	config, _ := c.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	badger := New(config)
+	badger := New(cfg)
 	err := badger.Init()
 	assert.Nil(t, err)
 	badger.Reset()
diff --git a/storage/boltdb/boltdb_test.go b/storage/boltdb/boltdb_test.go
index 8ea2670..07e1687 100644
--- a/storage/boltdb/boltdb_test.go
+++ b/storage/boltdb/boltdb_test.go
@@ -3,16 +3,16 @@ package boltdb
 import (
 	"testing"
 
-	c "github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/config"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestBoltDBEngine(t *testing.T) {
 	var val int64
 
-	config, _ := c.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	boltDB := New(config)
+	boltDB := New(cfg)
 	err := boltDB.Init()
 	assert.Nil(t, err)
 	boltDB.Reset()
diff --git a/storage/buntdb/buntdb_test.go b/storage/buntdb/buntdb_test.go
index 5a65f03..022ce42 100644
--- a/storage/buntdb/buntdb_test.go
+++ b/storage/buntdb/buntdb_test.go
@@ -4,21 +4,21 @@ import (
 	"os"
 	"testing"
 
-	c "github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/config"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestBuntDBEngine(t *testing.T) {
 	var val int64
 
-	config, _ := c.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	if _, err := os.Stat(config.Stat.BuntDB.Path); os.IsNotExist(err) {
-		err := os.RemoveAll(config.Stat.BuntDB.Path)
+	if _, err := os.Stat(cfg.Stat.BuntDB.Path); os.IsNotExist(err) {
+		err := os.RemoveAll(cfg.Stat.BuntDB.Path)
 		assert.Nil(t, err)
 	}
 
-	buntDB := New(config)
+	buntDB := New(cfg)
 	err := buntDB.Init()
 	assert.Nil(t, err)
 	buntDB.Reset()
diff --git a/storage/leveldb/leveldb_test.go b/storage/leveldb/leveldb_test.go
index aa69189..8268214 100644
--- a/storage/leveldb/leveldb_test.go
+++ b/storage/leveldb/leveldb_test.go
@@ -4,21 +4,21 @@ import (
 	"os"
 	"testing"
 
-	c "github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/config"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestLevelDBEngine(t *testing.T) {
 	var val int64
 
-	config, _ := c.LoadConf("")
+	cfg, _ := config.LoadConf()
 
-	if _, err := os.Stat(config.Stat.LevelDB.Path); os.IsNotExist(err) {
-		err = os.RemoveAll(config.Stat.LevelDB.Path)
+	if _, err := os.Stat(cfg.Stat.LevelDB.Path); os.IsNotExist(err) {
+		err = os.RemoveAll(cfg.Stat.LevelDB.Path)
 		assert.Nil(t, err)
 	}
 
-	levelDB := New(config)
+	levelDB := New(cfg)
 	err := levelDB.Init()
 	assert.Nil(t, err)
 	levelDB.Reset()
diff --git a/storage/redis/redis_test.go b/storage/redis/redis_test.go
index 3075df7..0f31072 100644
--- a/storage/redis/redis_test.go
+++ b/storage/redis/redis_test.go
@@ -4,15 +4,15 @@ import (
 	"sync"
 	"testing"
 
-	c "github.com/appleboy/gorush/config"
+	"github.com/appleboy/gorush/config"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestRedisServerError(t *testing.T) {
-	config, _ := c.LoadConf("")
-	config.Stat.Redis.Addr = "redis:6370"
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Redis.Addr = "redis:6370"
 
-	redis := New(config)
+	redis := New(cfg)
 	err := redis.Init()
 
 	assert.Error(t, err)
@@ -21,10 +21,10 @@ func TestRedisServerError(t *testing.T) {
 func TestRedisEngine(t *testing.T) {
 	var val int64
 
-	config, _ := c.LoadConf("")
-	config.Stat.Redis.Addr = "redis:6379"
+	cfg, _ := config.LoadConf()
+	cfg.Stat.Redis.Addr = "redis:6379"
 
-	redis := New(config)
+	redis := New(cfg)
 	err := redis.Init()
 	assert.Nil(t, err)
 	redis.Reset()